drivers/scsi/qedi/qedi_main.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * QLogic iSCSI Offload Driver
   4  * Copyright (c) 2016 Cavium Inc.
   5  */
   6
   7 #include <linux/module.h>
   8 #include <linux/pci.h>
   9 #include <linux/kernel.h>
  10 #include <linux/if_arp.h>
  11 #include <scsi/iscsi_if.h>
  12 #include <linux/inet.h>
  13 #include <net/arp.h>
  14 #include <linux/list.h>
  15 #include <linux/kthread.h>
  16 #include <linux/mm.h>
  17 #include <linux/if_vlan.h>
  18 #include <linux/cpu.h>
  19 #include <linux/iscsi_boot_sysfs.h>
  20
  21 #include <scsi/scsi_cmnd.h>
  22 #include <scsi/scsi_device.h>
  23 #include <scsi/scsi_eh.h>
  24 #include <scsi/scsi_host.h>
  25 #include <scsi/scsi.h>
  26
  27 #include "qedi.h"
  28 #include "qedi_gbl.h"
  29 #include "qedi_iscsi.h"
  30
  31 static uint qedi_qed_debug;
  32 module_param(qedi_qed_debug, uint, 0644);
  33 MODULE_PARM_DESC(qedi_qed_debug, " QED debug level 0 (default)");
  34
  35 static uint qedi_fw_debug;
  36 module_param(qedi_fw_debug, uint, 0644);
  37 MODULE_PARM_DESC(qedi_fw_debug, " Firmware debug level 0(default) to 3");
  38
  39 uint qedi_dbg_log = QEDI_LOG_WARN | QEDI_LOG_SCSI_TM;
  40 module_param(qedi_dbg_log, uint, 0644);
  41 MODULE_PARM_DESC(qedi_dbg_log, " Default debug level");
  42
  43 uint qedi_io_tracing;
  44 module_param(qedi_io_tracing, uint, 0644);
  45 MODULE_PARM_DESC(qedi_io_tracing,
  46                  " Enable logging of SCSI requests/completions into trace buffer. (default off).");
  47
  48 static uint qedi_ll2_buf_size = 0x400;
  49 module_param(qedi_ll2_buf_size, uint, 0644);
  50 MODULE_PARM_DESC(qedi_ll2_buf_size,
  51                  "parameter to set ping packet size, default - 0x400, Jumbo packets - 0x2400.");
  52
  53 static uint qedi_flags_override;
  54 module_param(qedi_flags_override, uint, 0644);
  55 MODULE_PARM_DESC(qedi_flags_override, "Disable/Enable MFW error flags bits action.");
  56
  57 const struct qed_iscsi_ops *qedi_ops;
  58 static struct scsi_transport_template *qedi_scsi_transport;
  59 static struct pci_driver qedi_pci_driver;
  60 static DEFINE_PER_CPU(struct qedi_percpu_s, qedi_percpu);
  61 static LIST_HEAD(qedi_udev_list);
  62 /* Static function declaration */
  63 static int qedi_alloc_global_queues(struct qedi_ctx *qedi);
  64 static void qedi_free_global_queues(struct qedi_ctx *qedi);
  65 static struct qedi_cmd *qedi_get_cmd_from_tid(struct qedi_ctx *qedi, u32 tid);
  66 static void qedi_reset_uio_rings(struct qedi_uio_dev *udev);
  67 static void qedi_ll2_free_skbs(struct qedi_ctx *qedi);
  68 static struct nvm_iscsi_block *qedi_get_nvram_block(struct qedi_ctx *qedi);
  69 static void qedi_recovery_handler(struct work_struct *work);
  70 static void qedi_schedule_hw_err_handler(void *dev,
  71                                          enum qed_hw_err_type err_type);
  72 static int qedi_suspend(struct pci_dev *pdev, pm_message_t state);
  73
  74 static int qedi_iscsi_event_cb(void *context, u8 fw_event_code, void *fw_handle)
  75 {
  76         struct qedi_ctx *qedi;
  77         struct qedi_endpoint *qedi_ep;
  78         struct iscsi_eqe_data *data;
  79         int rval = 0;
  80
  81         if (!context || !fw_handle) {
  82                 QEDI_ERR(NULL, "Recv event with ctx NULL\n");
  83                 return -EINVAL;
  84         }
  85
  86         qedi = (struct qedi_ctx *)context;
  87         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
  88                   "Recv Event %d fw_handle %p\n", fw_event_code, fw_handle);
  89
  90         data = (struct iscsi_eqe_data *)fw_handle;
  91         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
  92                   "icid=0x%x conn_id=0x%x err-code=0x%x error-pdu-opcode-reserved=0x%x\n",
  93                    data->icid, data->conn_id, data->error_code,
  94                    data->error_pdu_opcode_reserved);
  95
  96         qedi_ep = qedi->ep_tbl[data->icid];
  97
  98         if (!qedi_ep) {
  99                 QEDI_WARN(&qedi->dbg_ctx,
 100                           "Cannot process event, ep already disconnected, cid=0x%x\n",
 101                            data->icid);
 102                 WARN_ON(1);
 103                 return -ENODEV;
 104         }
 105
 106         switch (fw_event_code) {
 107         case ISCSI_EVENT_TYPE_ASYN_CONNECT_COMPLETE:
 108                 if (qedi_ep->state == EP_STATE_OFLDCONN_START)
 109                         qedi_ep->state = EP_STATE_OFLDCONN_COMPL;
 110
 111                 wake_up_interruptible(&qedi_ep->tcp_ofld_wait);
 112                 break;
 113         case ISCSI_EVENT_TYPE_ASYN_TERMINATE_DONE:
 114                 qedi_ep->state = EP_STATE_DISCONN_COMPL;
 115                 wake_up_interruptible(&qedi_ep->tcp_ofld_wait);
 116                 break;
 117         case ISCSI_EVENT_TYPE_ISCSI_CONN_ERROR:
 118                 qedi_process_iscsi_error(qedi_ep, data);
 119                 break;
 120         case ISCSI_EVENT_TYPE_ASYN_ABORT_RCVD:
 121         case ISCSI_EVENT_TYPE_ASYN_SYN_RCVD:
 122         case ISCSI_EVENT_TYPE_ASYN_MAX_RT_TIME:
 123         case ISCSI_EVENT_TYPE_ASYN_MAX_RT_CNT:
 124         case ISCSI_EVENT_TYPE_ASYN_MAX_KA_PROBES_CNT:
 125         case ISCSI_EVENT_TYPE_ASYN_FIN_WAIT2:
 126         case ISCSI_EVENT_TYPE_TCP_CONN_ERROR:
 127                 qedi_process_tcp_error(qedi_ep, data);
 128                 break;
 129         default:
 130                 QEDI_ERR(&qedi->dbg_ctx, "Recv Unknown Event %u\n",
 131                          fw_event_code);
 132         }
 133
 134         return rval;
 135 }
 136
 137 static int qedi_uio_open(struct uio_info *uinfo, struct inode *inode)
 138 {
 139         struct qedi_uio_dev *udev = uinfo->priv;
 140         struct qedi_ctx *qedi = udev->qedi;
 141
 142         if (!capable(CAP_NET_ADMIN))
 143                 return -EPERM;
 144
 145         if (udev->uio_dev != -1)
 146                 return -EBUSY;
 147
 148         rtnl_lock();
 149         udev->uio_dev = iminor(inode);
 150         qedi_reset_uio_rings(udev);
 151         set_bit(UIO_DEV_OPENED, &qedi->flags);
 152         rtnl_unlock();
 153
 154         return 0;
 155 }
 156
 157 static int qedi_uio_close(struct uio_info *uinfo, struct inode *inode)
 158 {
 159         struct qedi_uio_dev *udev = uinfo->priv;
 160         struct qedi_ctx *qedi = udev->qedi;
 161
 162         udev->uio_dev = -1;
 163         clear_bit(UIO_DEV_OPENED, &qedi->flags);
 164         qedi_ll2_free_skbs(qedi);
 165         return 0;
 166 }
 167
 168 static void __qedi_free_uio_rings(struct qedi_uio_dev *udev)
 169 {
 170         if (udev->uctrl) {
 171                 free_page((unsigned long)udev->uctrl);
 172                 udev->uctrl = NULL;
 173         }
 174
 175         if (udev->ll2_ring) {
 176                 free_page((unsigned long)udev->ll2_ring);
 177                 udev->ll2_ring = NULL;
 178         }
 179
 180         if (udev->ll2_buf) {
 181                 free_pages((unsigned long)udev->ll2_buf, 2);
 182                 udev->ll2_buf = NULL;
 183         }
 184 }
 185
 186 static void __qedi_free_uio(struct qedi_uio_dev *udev)
 187 {
 188         uio_unregister_device(&udev->qedi_uinfo);
 189
 190         __qedi_free_uio_rings(udev);
 191
 192         pci_dev_put(udev->pdev);
 193         kfree(udev);
 194 }
 195
 196 static void qedi_free_uio(struct qedi_uio_dev *udev)
 197 {
 198         if (!udev)
 199                 return;
 200
 201         list_del_init(&udev->list);
 202         __qedi_free_uio(udev);
 203 }
 204
 205 static void qedi_reset_uio_rings(struct qedi_uio_dev *udev)
 206 {
 207         struct qedi_ctx *qedi = NULL;
 208         struct qedi_uio_ctrl *uctrl = NULL;
 209
 210         qedi = udev->qedi;
 211         uctrl = udev->uctrl;
 212
 213         spin_lock_bh(&qedi->ll2_lock);
 214         uctrl->host_rx_cons = 0;
 215         uctrl->hw_rx_prod = 0;
 216         uctrl->hw_rx_bd_prod = 0;
 217         uctrl->host_rx_bd_cons = 0;
 218
 219         memset(udev->ll2_ring, 0, udev->ll2_ring_size);
 220         memset(udev->ll2_buf, 0, udev->ll2_buf_size);
 221         spin_unlock_bh(&qedi->ll2_lock);
 222 }
 223
 224 static int __qedi_alloc_uio_rings(struct qedi_uio_dev *udev)
 225 {
 226         int rc = 0;
 227
 228         if (udev->ll2_ring || udev->ll2_buf)
 229                 return rc;
 230
 231         /* Memory for control area.  */
 232         udev->uctrl = (void *)get_zeroed_page(GFP_KERNEL);
 233         if (!udev->uctrl)
 234                 return -ENOMEM;
 235
 236         /* Allocating memory for LL2 ring  */
 237         udev->ll2_ring_size = QEDI_PAGE_SIZE;
 238         udev->ll2_ring = (void *)get_zeroed_page(GFP_KERNEL | __GFP_COMP);
 239         if (!udev->ll2_ring) {
 240                 rc = -ENOMEM;
 241                 goto exit_alloc_ring;
 242         }
 243
 244         /* Allocating memory for Tx/Rx pkt buffer */
 245         udev->ll2_buf_size = TX_RX_RING * qedi_ll2_buf_size;
 246         udev->ll2_buf_size = QEDI_PAGE_ALIGN(udev->ll2_buf_size);
 247         udev->ll2_buf = (void *)__get_free_pages(GFP_KERNEL | __GFP_COMP |
 248                                                  __GFP_ZERO, 2);
 249         if (!udev->ll2_buf) {
 250                 rc = -ENOMEM;
 251                 goto exit_alloc_buf;
 252         }
 253         return rc;
 254
 255 exit_alloc_buf:
 256         free_page((unsigned long)udev->ll2_ring);
 257         udev->ll2_ring = NULL;
 258 exit_alloc_ring:
 259         return rc;
 260 }
 261
 262 static int qedi_alloc_uio_rings(struct qedi_ctx *qedi)
 263 {
 264         struct qedi_uio_dev *udev = NULL;
 265         int rc = 0;
 266
 267         list_for_each_entry(udev, &qedi_udev_list, list) {
 268                 if (udev->pdev == qedi->pdev) {
 269                         udev->qedi = qedi;
 270                         if (__qedi_alloc_uio_rings(udev)) {
 271                                 udev->qedi = NULL;
 272                                 return -ENOMEM;
 273                         }
 274                         qedi->udev = udev;
 275                         return 0;
 276                 }
 277         }
 278
 279         udev = kzalloc(sizeof(*udev), GFP_KERNEL);
 280         if (!udev)
 281                 goto err_udev;
 282
 283         udev->uio_dev = -1;
 284
 285         udev->qedi = qedi;
 286         udev->pdev = qedi->pdev;
 287
 288         rc = __qedi_alloc_uio_rings(udev);
 289         if (rc)
 290                 goto err_uctrl;
 291
 292         list_add(&udev->list, &qedi_udev_list);
 293
 294         pci_dev_get(udev->pdev);
 295         qedi->udev = udev;
 296
 297         udev->tx_pkt = udev->ll2_buf;
 298         udev->rx_pkt = udev->ll2_buf + qedi_ll2_buf_size;
 299         return 0;
 300
 301  err_uctrl:
 302         kfree(udev);
 303  err_udev:
 304         return -ENOMEM;
 305 }
 306
 307 static int qedi_init_uio(struct qedi_ctx *qedi)
 308 {
 309         struct qedi_uio_dev *udev = qedi->udev;
 310         struct uio_info *uinfo;
 311         int ret = 0;
 312
 313         if (!udev)
 314                 return -ENOMEM;
 315
 316         uinfo = &udev->qedi_uinfo;
 317
 318         uinfo->mem[0].addr = (unsigned long)udev->uctrl;
 319         uinfo->mem[0].size = sizeof(struct qedi_uio_ctrl);
 320         uinfo->mem[0].memtype = UIO_MEM_LOGICAL;
 321
 322         uinfo->mem[1].addr = (unsigned long)udev->ll2_ring;
 323         uinfo->mem[1].size = udev->ll2_ring_size;
 324         uinfo->mem[1].memtype = UIO_MEM_LOGICAL;
 325
 326         uinfo->mem[2].addr = (unsigned long)udev->ll2_buf;
 327         uinfo->mem[2].size = udev->ll2_buf_size;
 328         uinfo->mem[2].memtype = UIO_MEM_LOGICAL;
 329
 330         uinfo->name = "qedi_uio";
 331         uinfo->version = QEDI_MODULE_VERSION;
 332         uinfo->irq = UIO_IRQ_CUSTOM;
 333
 334         uinfo->open = qedi_uio_open;
 335         uinfo->release = qedi_uio_close;
 336
 337         if (udev->uio_dev == -1) {
 338                 if (!uinfo->priv) {
 339                         uinfo->priv = udev;
 340
 341                         ret = uio_register_device(&udev->pdev->dev, uinfo);
 342                         if (ret) {
 343                                 QEDI_ERR(&qedi->dbg_ctx,
 344                                          "UIO registration failed\n");
 345                         }
 346                 }
 347         }
 348
 349         return ret;
 350 }
 351
 352 static int qedi_alloc_and_init_sb(struct qedi_ctx *qedi,
 353                                   struct qed_sb_info *sb_info, u16 sb_id)
 354 {
 355         struct status_block *sb_virt;
 356         dma_addr_t sb_phys;
 357         int ret;
 358
 359         sb_virt = dma_alloc_coherent(&qedi->pdev->dev,
 360                                      sizeof(struct status_block), &sb_phys,
 361                                      GFP_KERNEL);
 362         if (!sb_virt) {
 363                 QEDI_ERR(&qedi->dbg_ctx,
 364                          "Status block allocation failed for id = %d.\n",
 365                           sb_id);
 366                 return -ENOMEM;
 367         }
 368
 369         ret = qedi_ops->common->sb_init(qedi->cdev, sb_info, sb_virt, sb_phys,
 370                                        sb_id, QED_SB_TYPE_STORAGE);
 371         if (ret) {
 372                 QEDI_ERR(&qedi->dbg_ctx,
 373                          "Status block initialization failed for id = %d.\n",
 374                           sb_id);
 375                 return ret;
 376         }
 377
 378         return 0;
 379 }
 380
 381 static void qedi_free_sb(struct qedi_ctx *qedi)
 382 {
 383         struct qed_sb_info *sb_info;
 384         int id;
 385
 386         for (id = 0; id < MIN_NUM_CPUS_MSIX(qedi); id++) {
 387                 sb_info = &qedi->sb_array[id];
 388                 if (sb_info->sb_virt)
 389                         dma_free_coherent(&qedi->pdev->dev,
 390                                           sizeof(*sb_info->sb_virt),
 391                                           (void *)sb_info->sb_virt,
 392                                           sb_info->sb_phys);
 393         }
 394 }
 395
 396 static void qedi_free_fp(struct qedi_ctx *qedi)
 397 {
 398         kfree(qedi->fp_array);
 399         kfree(qedi->sb_array);
 400 }
 401
 402 static void qedi_destroy_fp(struct qedi_ctx *qedi)
 403 {
 404         qedi_free_sb(qedi);
 405         qedi_free_fp(qedi);
 406 }
 407
 408 static int qedi_alloc_fp(struct qedi_ctx *qedi)
 409 {
 410         int ret = 0;
 411
 412         qedi->fp_array = kcalloc(MIN_NUM_CPUS_MSIX(qedi),
 413                                  sizeof(struct qedi_fastpath), GFP_KERNEL);
 414         if (!qedi->fp_array) {
 415                 QEDI_ERR(&qedi->dbg_ctx,
 416                          "fastpath fp array allocation failed.\n");
 417                 return -ENOMEM;
 418         }
 419
 420         qedi->sb_array = kcalloc(MIN_NUM_CPUS_MSIX(qedi),
 421                                  sizeof(struct qed_sb_info), GFP_KERNEL);
 422         if (!qedi->sb_array) {
 423                 QEDI_ERR(&qedi->dbg_ctx,
 424                          "fastpath sb array allocation failed.\n");
 425                 ret = -ENOMEM;
 426                 goto free_fp;
 427         }
 428
 429         return ret;
 430
 431 free_fp:
 432         qedi_free_fp(qedi);
 433         return ret;
 434 }
 435
 436 static void qedi_int_fp(struct qedi_ctx *qedi)
 437 {
 438         struct qedi_fastpath *fp;
 439         int id;
 440
 441         memset(qedi->fp_array, 0, MIN_NUM_CPUS_MSIX(qedi) *
 442                sizeof(*qedi->fp_array));
 443         memset(qedi->sb_array, 0, MIN_NUM_CPUS_MSIX(qedi) *
 444                sizeof(*qedi->sb_array));
 445
 446         for (id = 0; id < MIN_NUM_CPUS_MSIX(qedi); id++) {
 447                 fp = &qedi->fp_array[id];
 448                 fp->sb_info = &qedi->sb_array[id];
 449                 fp->sb_id = id;
 450                 fp->qedi = qedi;
 451                 snprintf(fp->name, sizeof(fp->name), "%s-fp-%d",
 452                          "qedi", id);
 453
 454                 /* fp_array[i] ---- irq cookie
 455                  * So init data which is needed in int ctx
 456                  */
 457         }
 458 }
 459
 460 static int qedi_prepare_fp(struct qedi_ctx *qedi)
 461 {
 462         struct qedi_fastpath *fp;
 463         int id, ret = 0;
 464
 465         ret = qedi_alloc_fp(qedi);
 466         if (ret)
 467                 goto err;
 468
 469         qedi_int_fp(qedi);
 470
 471         for (id = 0; id < MIN_NUM_CPUS_MSIX(qedi); id++) {
 472                 fp = &qedi->fp_array[id];
 473                 ret = qedi_alloc_and_init_sb(qedi, fp->sb_info, fp->sb_id);
 474                 if (ret) {
 475                         QEDI_ERR(&qedi->dbg_ctx,
 476                                  "SB allocation and initialization failed.\n");
 477                         ret = -EIO;
 478                         goto err_init;
 479                 }
 480         }
 481
 482         return 0;
 483
 484 err_init:
 485         qedi_free_sb(qedi);
 486         qedi_free_fp(qedi);
 487 err:
 488         return ret;
 489 }
 490
 491 static int qedi_setup_cid_que(struct qedi_ctx *qedi)
 492 {
 493         int i;
 494
 495         qedi->cid_que.cid_que_base = kmalloc_array(qedi->max_active_conns,
 496                                                    sizeof(u32), GFP_KERNEL);
 497         if (!qedi->cid_que.cid_que_base)
 498                 return -ENOMEM;
 499
 500         qedi->cid_que.conn_cid_tbl = kmalloc_array(qedi->max_active_conns,
 501                                                    sizeof(struct qedi_conn *),
 502                                                    GFP_KERNEL);
 503         if (!qedi->cid_que.conn_cid_tbl) {
 504                 kfree(qedi->cid_que.cid_que_base);
 505                 qedi->cid_que.cid_que_base = NULL;
 506                 return -ENOMEM;
 507         }
 508
 509         qedi->cid_que.cid_que = (u32 *)qedi->cid_que.cid_que_base;
 510         qedi->cid_que.cid_q_prod_idx = 0;
 511         qedi->cid_que.cid_q_cons_idx = 0;
 512         qedi->cid_que.cid_q_max_idx = qedi->max_active_conns;
 513         qedi->cid_que.cid_free_cnt = qedi->max_active_conns;
 514
 515         for (i = 0; i < qedi->max_active_conns; i++) {
 516                 qedi->cid_que.cid_que[i] = i;
 517                 qedi->cid_que.conn_cid_tbl[i] = NULL;
 518         }
 519
 520         return 0;
 521 }
 522
 523 static void qedi_release_cid_que(struct qedi_ctx *qedi)
 524 {
 525         kfree(qedi->cid_que.cid_que_base);
 526         qedi->cid_que.cid_que_base = NULL;
 527
 528         kfree(qedi->cid_que.conn_cid_tbl);
 529         qedi->cid_que.conn_cid_tbl = NULL;
 530 }
 531
 532 static int qedi_init_id_tbl(struct qedi_portid_tbl *id_tbl, u16 size,
 533                             u16 start_id, u16 next)
 534 {
 535         id_tbl->start = start_id;
 536         id_tbl->max = size;
 537         id_tbl->next = next;
 538         spin_lock_init(&id_tbl->lock);
 539         id_tbl->table = kcalloc(BITS_TO_LONGS(size), sizeof(long), GFP_KERNEL);
 540         if (!id_tbl->table)
 541                 return -ENOMEM;
 542
 543         return 0;
 544 }
 545
 546 static void qedi_free_id_tbl(struct qedi_portid_tbl *id_tbl)
 547 {
 548         kfree(id_tbl->table);
 549         id_tbl->table = NULL;
 550 }
 551
 552 int qedi_alloc_id(struct qedi_portid_tbl *id_tbl, u16 id)
 553 {
 554         int ret = -1;
 555
 556         id -= id_tbl->start;
 557         if (id >= id_tbl->max)
 558                 return ret;
 559
 560         spin_lock(&id_tbl->lock);
 561         if (!test_bit(id, id_tbl->table)) {
 562                 set_bit(id, id_tbl->table);
 563                 ret = 0;
 564         }
 565         spin_unlock(&id_tbl->lock);
 566         return ret;
 567 }
 568
 569 u16 qedi_alloc_new_id(struct qedi_portid_tbl *id_tbl)
 570 {
 571         u16 id;
 572
 573         spin_lock(&id_tbl->lock);
 574         id = find_next_zero_bit(id_tbl->table, id_tbl->max, id_tbl->next);
 575         if (id >= id_tbl->max) {
 576                 id = QEDI_LOCAL_PORT_INVALID;
 577                 if (id_tbl->next != 0) {
 578                         id = find_first_zero_bit(id_tbl->table, id_tbl->next);
 579                         if (id >= id_tbl->next)
 580                                 id = QEDI_LOCAL_PORT_INVALID;
 581                 }
 582         }
 583
 584         if (id < id_tbl->max) {
 585                 set_bit(id, id_tbl->table);
 586                 id_tbl->next = (id + 1) & (id_tbl->max - 1);
 587                 id += id_tbl->start;
 588         }
 589
 590         spin_unlock(&id_tbl->lock);
 591
 592         return id;
 593 }
 594
 595 void qedi_free_id(struct qedi_portid_tbl *id_tbl, u16 id)
 596 {
 597         if (id == QEDI_LOCAL_PORT_INVALID)
 598                 return;
 599
 600         id -= id_tbl->start;
 601         if (id >= id_tbl->max)
 602                 return;
 603
 604         clear_bit(id, id_tbl->table);
 605 }
 606
 607 static void qedi_cm_free_mem(struct qedi_ctx *qedi)
 608 {
 609         kfree(qedi->ep_tbl);
 610         qedi->ep_tbl = NULL;
 611         qedi_free_id_tbl(&qedi->lcl_port_tbl);
 612 }
 613
 614 static int qedi_cm_alloc_mem(struct qedi_ctx *qedi)
 615 {
 616         u16 port_id;
 617
 618         qedi->ep_tbl = kzalloc((qedi->max_active_conns *
 619                                 sizeof(struct qedi_endpoint *)), GFP_KERNEL);
 620         if (!qedi->ep_tbl)
 621                 return -ENOMEM;
 622         port_id = get_random_u32_below(QEDI_LOCAL_PORT_RANGE);
 623         if (qedi_init_id_tbl(&qedi->lcl_port_tbl, QEDI_LOCAL_PORT_RANGE,
 624                              QEDI_LOCAL_PORT_MIN, port_id)) {
 625                 qedi_cm_free_mem(qedi);
 626                 return -ENOMEM;
 627         }
 628
 629         return 0;
 630 }
 631
 632 static struct qedi_ctx *qedi_host_alloc(struct pci_dev *pdev)
 633 {
 634         struct Scsi_Host *shost;
 635         struct qedi_ctx *qedi = NULL;
 636
 637         shost = iscsi_host_alloc(&qedi_host_template,
 638                                  sizeof(struct qedi_ctx), 0);
 639         if (!shost) {
 640                 QEDI_ERR(NULL, "Could not allocate shost\n");
 641                 goto exit_setup_shost;
 642         }
 643
 644         shost->max_id = QEDI_MAX_ISCSI_CONNS_PER_HBA - 1;
 645         shost->max_channel = 0;
 646         shost->max_lun = ~0;
 647         shost->max_cmd_len = 16;
 648         shost->transportt = qedi_scsi_transport;
 649
 650         qedi = iscsi_host_priv(shost);
 651         memset(qedi, 0, sizeof(*qedi));
 652         qedi->shost = shost;
 653         qedi->dbg_ctx.host_no = shost->host_no;
 654         qedi->pdev = pdev;
 655         qedi->dbg_ctx.pdev = pdev;
 656         qedi->max_active_conns = ISCSI_MAX_SESS_PER_HBA;
 657         qedi->max_sqes = QEDI_SQ_SIZE;
 658
 659         shost->nr_hw_queues = MIN_NUM_CPUS_MSIX(qedi);
 660
 661         pci_set_drvdata(pdev, qedi);
 662
 663 exit_setup_shost:
 664         return qedi;
 665 }
 666
 667 static int qedi_ll2_rx(void *cookie, struct sk_buff *skb, u32 arg1, u32 arg2)
 668 {
 669         struct qedi_ctx *qedi = (struct qedi_ctx *)cookie;
 670         struct skb_work_list *work;
 671         struct ethhdr *eh;
 672
 673         if (!qedi) {
 674                 QEDI_ERR(NULL, "qedi is NULL\n");
 675                 return -1;
 676         }
 677
 678         if (!test_bit(UIO_DEV_OPENED, &qedi->flags)) {
 679                 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_UIO,
 680                           "UIO DEV is not opened\n");
 681                 kfree_skb(skb);
 682                 return 0;
 683         }
 684
 685         eh = (struct ethhdr *)skb->data;
 686         /* Undo VLAN encapsulation */
 687         if (eh->h_proto == htons(ETH_P_8021Q)) {
 688                 memmove((u8 *)eh + VLAN_HLEN, eh, ETH_ALEN * 2);
 689                 eh = (struct ethhdr *)skb_pull(skb, VLAN_HLEN);
 690                 skb_reset_mac_header(skb);
 691         }
 692
 693         /* Filter out non FIP/FCoE frames here to free them faster */
 694         if (eh->h_proto != htons(ETH_P_ARP) &&
 695             eh->h_proto != htons(ETH_P_IP) &&
 696             eh->h_proto != htons(ETH_P_IPV6)) {
 697                 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_LL2,
 698                           "Dropping frame ethertype [0x%x] len [0x%x].\n",
 699                           eh->h_proto, skb->len);
 700                 kfree_skb(skb);
 701                 return 0;
 702         }
 703
 704         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_LL2,
 705                   "Allowed frame ethertype [0x%x] len [0x%x].\n",
 706                   eh->h_proto, skb->len);
 707
 708         work = kzalloc(sizeof(*work), GFP_ATOMIC);
 709         if (!work) {
 710                 QEDI_WARN(&qedi->dbg_ctx,
 711                           "Could not allocate work so dropping frame.\n");
 712                 kfree_skb(skb);
 713                 return 0;
 714         }
 715
 716         INIT_LIST_HEAD(&work->list);
 717         work->skb = skb;
 718
 719         if (skb_vlan_tag_present(skb))
 720                 work->vlan_id = skb_vlan_tag_get(skb);
 721
 722         if (work->vlan_id)
 723                 __vlan_insert_tag(work->skb, htons(ETH_P_8021Q), work->vlan_id);
 724
 725         spin_lock_bh(&qedi->ll2_lock);
 726         list_add_tail(&work->list, &qedi->ll2_skb_list);
 727         spin_unlock_bh(&qedi->ll2_lock);
 728
 729         wake_up_process(qedi->ll2_recv_thread);
 730
 731         return 0;
 732 }
 733
 734 /* map this skb to iscsiuio mmaped region */
 735 static int qedi_ll2_process_skb(struct qedi_ctx *qedi, struct sk_buff *skb,
 736                                 u16 vlan_id)
 737 {
 738         struct qedi_uio_dev *udev = NULL;
 739         struct qedi_uio_ctrl *uctrl = NULL;
 740         struct qedi_rx_bd rxbd;
 741         struct qedi_rx_bd *p_rxbd;
 742         u32 rx_bd_prod;
 743         void *pkt;
 744         int len = 0;
 745         u32 prod;
 746
 747         if (!qedi) {
 748                 QEDI_ERR(NULL, "qedi is NULL\n");
 749                 return -1;
 750         }
 751
 752         udev = qedi->udev;
 753         uctrl = udev->uctrl;
 754
 755         ++uctrl->hw_rx_prod_cnt;
 756         prod = (uctrl->hw_rx_prod + 1) % RX_RING;
 757
 758         pkt = udev->rx_pkt + (prod * qedi_ll2_buf_size);
 759         len = min_t(u32, skb->len, (u32)qedi_ll2_buf_size);
 760         memcpy(pkt, skb->data, len);
 761
 762         memset(&rxbd, 0, sizeof(rxbd));
 763         rxbd.rx_pkt_index = prod;
 764         rxbd.rx_pkt_len = len;
 765         rxbd.vlan_id = vlan_id;
 766
 767         uctrl->hw_rx_bd_prod = (uctrl->hw_rx_bd_prod + 1) % QEDI_NUM_RX_BD;
 768         rx_bd_prod = uctrl->hw_rx_bd_prod;
 769         p_rxbd = (struct qedi_rx_bd *)udev->ll2_ring;
 770         p_rxbd += rx_bd_prod;
 771
 772         memcpy(p_rxbd, &rxbd, sizeof(rxbd));
 773
 774         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_LL2,
 775                   "hw_rx_prod [%d] prod [%d] hw_rx_bd_prod [%d] rx_pkt_idx [%d] rx_len [%d].\n",
 776                   uctrl->hw_rx_prod, prod, uctrl->hw_rx_bd_prod,
 777                   rxbd.rx_pkt_index, rxbd.rx_pkt_len);
 778         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_LL2,
 779                   "host_rx_cons [%d] hw_rx_bd_cons [%d].\n",
 780                   uctrl->host_rx_cons, uctrl->host_rx_bd_cons);
 781
 782         uctrl->hw_rx_prod = prod;
 783
 784         /* notify the iscsiuio about new packet */
 785         uio_event_notify(&udev->qedi_uinfo);
 786
 787         return 0;
 788 }
 789
 790 static void qedi_ll2_free_skbs(struct qedi_ctx *qedi)
 791 {
 792         struct skb_work_list *work, *work_tmp;
 793
 794         spin_lock_bh(&qedi->ll2_lock);
 795         list_for_each_entry_safe(work, work_tmp, &qedi->ll2_skb_list, list) {
 796                 list_del(&work->list);
 797                 kfree_skb(work->skb);
 798                 kfree(work);
 799         }
 800         spin_unlock_bh(&qedi->ll2_lock);
 801 }
 802
 803 static int qedi_ll2_recv_thread(void *arg)
 804 {
 805         struct qedi_ctx *qedi = (struct qedi_ctx *)arg;
 806         struct skb_work_list *work, *work_tmp;
 807
 808         set_user_nice(current, -20);
 809
 810         while (!kthread_should_stop()) {
 811                 spin_lock_bh(&qedi->ll2_lock);
 812                 list_for_each_entry_safe(work, work_tmp, &qedi->ll2_skb_list,
 813                                          list) {
 814                         list_del(&work->list);
 815                         qedi_ll2_process_skb(qedi, work->skb, work->vlan_id);
 816                         kfree_skb(work->skb);
 817                         kfree(work);
 818                 }
 819                 set_current_state(TASK_INTERRUPTIBLE);
 820                 spin_unlock_bh(&qedi->ll2_lock);
 821                 schedule();
 822         }
 823
 824         __set_current_state(TASK_RUNNING);
 825         return 0;
 826 }
 827
 828 static int qedi_set_iscsi_pf_param(struct qedi_ctx *qedi)
 829 {
 830         u8 num_sq_pages;
 831         u32 log_page_size;
 832         int rval = 0;
 833
 834
 835         num_sq_pages = (MAX_OUTSTANDING_TASKS_PER_CON * 8) / QEDI_PAGE_SIZE;
 836
 837         qedi->num_queues = MIN_NUM_CPUS_MSIX(qedi);
 838
 839         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
 840                   "Number of CQ count is %d\n", qedi->num_queues);
 841
 842         memset(&qedi->pf_params.iscsi_pf_params, 0,
 843                sizeof(qedi->pf_params.iscsi_pf_params));
 844
 845         qedi->p_cpuq = dma_alloc_coherent(&qedi->pdev->dev,
 846                         qedi->num_queues * sizeof(struct qedi_glbl_q_params),
 847                         &qedi->hw_p_cpuq, GFP_KERNEL);
 848         if (!qedi->p_cpuq) {
 849                 QEDI_ERR(&qedi->dbg_ctx, "dma_alloc_coherent fail\n");
 850                 rval = -1;
 851                 goto err_alloc_mem;
 852         }
 853
 854         rval = qedi_alloc_global_queues(qedi);
 855         if (rval) {
 856                 QEDI_ERR(&qedi->dbg_ctx, "Global queue allocation failed.\n");
 857                 rval = -1;
 858                 goto err_alloc_mem;
 859         }
 860
 861         qedi->pf_params.iscsi_pf_params.num_cons = QEDI_MAX_ISCSI_CONNS_PER_HBA;
 862         qedi->pf_params.iscsi_pf_params.num_tasks = QEDI_MAX_ISCSI_TASK;
 863         qedi->pf_params.iscsi_pf_params.half_way_close_timeout = 10;
 864         qedi->pf_params.iscsi_pf_params.num_sq_pages_in_ring = num_sq_pages;
 865         qedi->pf_params.iscsi_pf_params.num_r2tq_pages_in_ring = num_sq_pages;
 866         qedi->pf_params.iscsi_pf_params.num_uhq_pages_in_ring = num_sq_pages;
 867         qedi->pf_params.iscsi_pf_params.num_queues = qedi->num_queues;
 868         qedi->pf_params.iscsi_pf_params.debug_mode = qedi_fw_debug;
 869         qedi->pf_params.iscsi_pf_params.two_msl_timer = QED_TWO_MSL_TIMER_DFLT;
 870         qedi->pf_params.iscsi_pf_params.tx_sws_timer = QED_TX_SWS_TIMER_DFLT;
 871         qedi->pf_params.iscsi_pf_params.max_fin_rt = 2;
 872
 873         for (log_page_size = 0 ; log_page_size < 32 ; log_page_size++) {
 874                 if ((1 << log_page_size) == QEDI_PAGE_SIZE)
 875                         break;
 876         }
 877         qedi->pf_params.iscsi_pf_params.log_page_size = log_page_size;
 878
 879         qedi->pf_params.iscsi_pf_params.glbl_q_params_addr =
 880                                                            (u64)qedi->hw_p_cpuq;
 881
 882         /* RQ BDQ initializations.
 883          * rq_num_entries: suggested value for Initiator is 16 (4KB RQ)
 884          * rqe_log_size: 8 for 256B RQE
 885          */
 886         qedi->pf_params.iscsi_pf_params.rqe_log_size = 8;
 887         /* BDQ address and size */
 888         qedi->pf_params.iscsi_pf_params.bdq_pbl_base_addr[BDQ_ID_RQ] =
 889                                                         qedi->bdq_pbl_list_dma;
 890         qedi->pf_params.iscsi_pf_params.bdq_pbl_num_entries[BDQ_ID_RQ] =
 891                                                 qedi->bdq_pbl_list_num_entries;
 892         qedi->pf_params.iscsi_pf_params.rq_buffer_size = QEDI_BDQ_BUF_SIZE;
 893
 894         /* cq_num_entries: num_tasks + rq_num_entries */
 895         qedi->pf_params.iscsi_pf_params.cq_num_entries = 2048;
 896
 897         qedi->pf_params.iscsi_pf_params.gl_rq_pi = QEDI_PROTO_CQ_PROD_IDX;
 898         qedi->pf_params.iscsi_pf_params.gl_cmd_pi = 1;
 899
 900 err_alloc_mem:
 901         return rval;
 902 }
 903
 904 /* Free DMA coherent memory for array of queue pointers we pass to qed */
 905 static void qedi_free_iscsi_pf_param(struct qedi_ctx *qedi)
 906 {
 907         size_t size = 0;
 908
 909         if (qedi->p_cpuq) {
 910                 size = qedi->num_queues * sizeof(struct qedi_glbl_q_params);
 911                 dma_free_coherent(&qedi->pdev->dev, size, qedi->p_cpuq,
 912                                     qedi->hw_p_cpuq);
 913         }
 914
 915         qedi_free_global_queues(qedi);
 916
 917         kfree(qedi->global_queues);
 918 }
 919
 920 static void qedi_get_boot_tgt_info(struct nvm_iscsi_block *block,
 921                                    struct qedi_boot_target *tgt, u8 index)
 922 {
 923         u32 ipv6_en;
 924
 925         ipv6_en = !!(block->generic.ctrl_flags &
 926                      NVM_ISCSI_CFG_GEN_IPV6_ENABLED);
 927
 928         snprintf(tgt->iscsi_name, sizeof(tgt->iscsi_name), "%s",
 929                  block->target[index].target_name.byte);
 930
 931         tgt->ipv6_en = ipv6_en;
 932
 933         if (ipv6_en)
 934                 snprintf(tgt->ip_addr, IPV6_LEN, "%pI6\n",
 935                          block->target[index].ipv6_addr.byte);
 936         else
 937                 snprintf(tgt->ip_addr, IPV4_LEN, "%pI4\n",
 938                          block->target[index].ipv4_addr.byte);
 939 }
 940
 941 static int qedi_find_boot_info(struct qedi_ctx *qedi,
 942                                struct qed_mfw_tlv_iscsi *iscsi,
 943                                struct nvm_iscsi_block *block)
 944 {
 945         struct qedi_boot_target *pri_tgt = NULL, *sec_tgt = NULL;
 946         u32 pri_ctrl_flags = 0, sec_ctrl_flags = 0, found = 0;
 947         struct iscsi_cls_session *cls_sess;
 948         struct iscsi_cls_conn *cls_conn;
 949         struct qedi_conn *qedi_conn;
 950         struct iscsi_session *sess;
 951         struct iscsi_conn *conn;
 952         char ep_ip_addr[64];
 953         int i, ret = 0;
 954
 955         pri_ctrl_flags = !!(block->target[0].ctrl_flags &
 956                                         NVM_ISCSI_CFG_TARGET_ENABLED);
 957         if (pri_ctrl_flags) {
 958                 pri_tgt = kzalloc(sizeof(*pri_tgt), GFP_KERNEL);
 959                 if (!pri_tgt)
 960                         return -1;
 961                 qedi_get_boot_tgt_info(block, pri_tgt, 0);
 962         }
 963
 964         sec_ctrl_flags = !!(block->target[1].ctrl_flags &
 965                                         NVM_ISCSI_CFG_TARGET_ENABLED);
 966         if (sec_ctrl_flags) {
 967                 sec_tgt = kzalloc(sizeof(*sec_tgt), GFP_KERNEL);
 968                 if (!sec_tgt) {
 969                         ret = -1;
 970                         goto free_tgt;
 971                 }
 972                 qedi_get_boot_tgt_info(block, sec_tgt, 1);
 973         }
 974
 975         for (i = 0; i < qedi->max_active_conns; i++) {
 976                 qedi_conn = qedi_get_conn_from_id(qedi, i);
 977                 if (!qedi_conn)
 978                         continue;
 979
 980                 if (qedi_conn->ep->ip_type == TCP_IPV4)
 981                         snprintf(ep_ip_addr, IPV4_LEN, "%pI4\n",
 982                                  qedi_conn->ep->dst_addr);
 983                 else
 984                         snprintf(ep_ip_addr, IPV6_LEN, "%pI6\n",
 985                                  qedi_conn->ep->dst_addr);
 986
 987                 cls_conn = qedi_conn->cls_conn;
 988                 conn = cls_conn->dd_data;
 989                 cls_sess = iscsi_conn_to_session(cls_conn);
 990                 sess = cls_sess->dd_data;
 991
 992                 if (!iscsi_is_session_online(cls_sess))
 993                         continue;
 994
 995                 if (!sess->targetname)
 996                         continue;
 997
 998                 if (pri_ctrl_flags) {
 999                         if (!strcmp(pri_tgt->iscsi_name, sess->targetname) &&
1000                             !strcmp(pri_tgt->ip_addr, ep_ip_addr)) {
1001                                 found = 1;
1002                                 break;
1003                         }
1004                 }
1005
1006                 if (sec_ctrl_flags) {
1007                         if (!strcmp(sec_tgt->iscsi_name, sess->targetname) &&
1008                             !strcmp(sec_tgt->ip_addr, ep_ip_addr)) {
1009                                 found = 1;
1010                                 break;
1011                         }
1012                 }
1013         }
1014
1015         if (found) {
1016                 if (conn->hdrdgst_en) {
1017                         iscsi->header_digest_set = true;
1018                         iscsi->header_digest = 1;
1019                 }
1020
1021                 if (conn->datadgst_en) {
1022                         iscsi->data_digest_set = true;
1023                         iscsi->data_digest = 1;
1024                 }
1025                 iscsi->boot_taget_portal_set = true;
1026                 iscsi->boot_taget_portal = sess->tpgt;
1027
1028         } else {
1029                 ret = -1;
1030         }
1031
1032         if (sec_ctrl_flags)
1033                 kfree(sec_tgt);
1034 free_tgt:
1035         if (pri_ctrl_flags)
1036                 kfree(pri_tgt);
1037
1038         return ret;
1039 }
1040
1041 static void qedi_get_generic_tlv_data(void *dev, struct qed_generic_tlvs *data)
1042 {
1043         struct qedi_ctx *qedi;
1044
1045         if (!dev) {
1046                 QEDI_INFO(NULL, QEDI_LOG_EVT,
1047                           "dev is NULL so ignoring get_generic_tlv_data request.\n");
1048                 return;
1049         }
1050         qedi = (struct qedi_ctx *)dev;
1051
1052         memset(data, 0, sizeof(struct qed_generic_tlvs));
1053         ether_addr_copy(data->mac[0], qedi->mac);
1054 }
1055
1056 /*
1057  * Protocol TLV handler
1058  */
1059 static void qedi_get_protocol_tlv_data(void *dev, void *data)
1060 {
1061         struct qed_mfw_tlv_iscsi *iscsi = data;
1062         struct qed_iscsi_stats *fw_iscsi_stats;
1063         struct nvm_iscsi_block *block = NULL;
1064         u32 chap_en = 0, mchap_en = 0;
1065         struct qedi_ctx *qedi = dev;
1066         int rval = 0;
1067
1068         fw_iscsi_stats = kmalloc(sizeof(*fw_iscsi_stats), GFP_KERNEL);
1069         if (!fw_iscsi_stats) {
1070                 QEDI_ERR(&qedi->dbg_ctx,
1071                          "Could not allocate memory for fw_iscsi_stats.\n");
1072                 goto exit_get_data;
1073         }
1074
1075         mutex_lock(&qedi->stats_lock);
1076         /* Query firmware for offload stats */
1077         qedi_ops->get_stats(qedi->cdev, fw_iscsi_stats);
1078         mutex_unlock(&qedi->stats_lock);
1079
1080         iscsi->rx_frames_set = true;
1081         iscsi->rx_frames = fw_iscsi_stats->iscsi_rx_packet_cnt;
1082         iscsi->rx_bytes_set = true;
1083         iscsi->rx_bytes = fw_iscsi_stats->iscsi_rx_bytes_cnt;
1084         iscsi->tx_frames_set = true;
1085         iscsi->tx_frames = fw_iscsi_stats->iscsi_tx_packet_cnt;
1086         iscsi->tx_bytes_set = true;
1087         iscsi->tx_bytes = fw_iscsi_stats->iscsi_tx_bytes_cnt;
1088         iscsi->frame_size_set = true;
1089         iscsi->frame_size = qedi->ll2_mtu;
1090         block = qedi_get_nvram_block(qedi);
1091         if (block) {
1092                 chap_en = !!(block->generic.ctrl_flags &
1093                              NVM_ISCSI_CFG_GEN_CHAP_ENABLED);
1094                 mchap_en = !!(block->generic.ctrl_flags &
1095                               NVM_ISCSI_CFG_GEN_CHAP_MUTUAL_ENABLED);
1096
1097                 iscsi->auth_method_set = (chap_en || mchap_en) ? true : false;
1098                 iscsi->auth_method = 1;
1099                 if (chap_en)
1100                         iscsi->auth_method = 2;
1101                 if (mchap_en)
1102                         iscsi->auth_method = 3;
1103
1104                 iscsi->tx_desc_size_set = true;
1105                 iscsi->tx_desc_size = QEDI_SQ_SIZE;
1106                 iscsi->rx_desc_size_set = true;
1107                 iscsi->rx_desc_size = QEDI_CQ_SIZE;
1108
1109                 /* tpgt, hdr digest, data digest */
1110                 rval = qedi_find_boot_info(qedi, iscsi, block);
1111                 if (rval)
1112                         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
1113                                   "Boot target not set");
1114         }
1115
1116         kfree(fw_iscsi_stats);
1117 exit_get_data:
1118         return;
1119 }
1120
1121 void qedi_schedule_hw_err_handler(void *dev,
1122                                   enum qed_hw_err_type err_type)
1123 {
1124         struct qedi_ctx *qedi = (struct qedi_ctx *)dev;
1125         unsigned long override_flags = qedi_flags_override;
1126
1127         if (override_flags && test_bit(QEDI_ERR_OVERRIDE_EN, &override_flags))
1128                 qedi->qedi_err_flags = qedi_flags_override;
1129
1130         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
1131                   "HW error handler scheduled, err=%d err_flags=0x%x\n",
1132                   err_type, qedi->qedi_err_flags);
1133
1134         switch (err_type) {
1135         case QED_HW_ERR_FAN_FAIL:
1136                 schedule_delayed_work(&qedi->board_disable_work, 0);
1137                 break;
1138         case QED_HW_ERR_MFW_RESP_FAIL:
1139         case QED_HW_ERR_HW_ATTN:
1140         case QED_HW_ERR_DMAE_FAIL:
1141         case QED_HW_ERR_RAMROD_FAIL:
1142         case QED_HW_ERR_FW_ASSERT:
1143                 /* Prevent HW attentions from being reasserted */
1144                 if (test_bit(QEDI_ERR_ATTN_CLR_EN, &qedi->qedi_err_flags))
1145                         qedi_ops->common->attn_clr_enable(qedi->cdev, true);
1146
1147                 if (err_type == QED_HW_ERR_RAMROD_FAIL &&
1148                     test_bit(QEDI_ERR_IS_RECOVERABLE, &qedi->qedi_err_flags))
1149                         qedi_ops->common->recovery_process(qedi->cdev);
1150
1151                 break;
1152         default:
1153                 break;
1154         }
1155 }
1156
1157 static void qedi_schedule_recovery_handler(void *dev)
1158 {
1159         struct qedi_ctx *qedi = dev;
1160
1161         QEDI_ERR(&qedi->dbg_ctx, "Recovery handler scheduled.\n");
1162
1163         if (test_and_set_bit(QEDI_IN_RECOVERY, &qedi->flags))
1164                 return;
1165
1166         atomic_set(&qedi->link_state, QEDI_LINK_DOWN);
1167
1168         schedule_delayed_work(&qedi->recovery_work, 0);
1169 }
1170
1171 static void qedi_set_conn_recovery(struct iscsi_cls_session *cls_session)
1172 {
1173         struct iscsi_session *session = cls_session->dd_data;
1174         struct iscsi_conn *conn = session->leadconn;
1175         struct qedi_conn *qedi_conn = conn->dd_data;
1176
1177         qedi_start_conn_recovery(qedi_conn->qedi, qedi_conn);
1178 }
1179
1180 static void qedi_link_update(void *dev, struct qed_link_output *link)
1181 {
1182         struct qedi_ctx *qedi = (struct qedi_ctx *)dev;
1183
1184         if (link->link_up) {
1185                 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, "Link Up event.\n");
1186                 atomic_set(&qedi->link_state, QEDI_LINK_UP);
1187         } else {
1188                 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
1189                           "Link Down event.\n");
1190                 atomic_set(&qedi->link_state, QEDI_LINK_DOWN);
1191                 iscsi_host_for_each_session(qedi->shost, qedi_set_conn_recovery);
1192         }
1193 }
1194
1195 static struct qed_iscsi_cb_ops qedi_cb_ops = {
1196         {
1197                 .link_update =          qedi_link_update,
1198                 .schedule_recovery_handler = qedi_schedule_recovery_handler,
1199                 .schedule_hw_err_handler = qedi_schedule_hw_err_handler,
1200                 .get_protocol_tlv_data = qedi_get_protocol_tlv_data,
1201                 .get_generic_tlv_data = qedi_get_generic_tlv_data,
1202         }
1203 };
1204
1205 static int qedi_queue_cqe(struct qedi_ctx *qedi, union iscsi_cqe *cqe,
1206                           u16 que_idx, struct qedi_percpu_s *p)
1207 {
1208         struct qedi_work *qedi_work;
1209         struct qedi_conn *q_conn;
1210         struct qedi_cmd *qedi_cmd;
1211         u32 iscsi_cid;
1212         int rc = 0;
1213
1214         iscsi_cid  = cqe->cqe_common.conn_id;
1215         q_conn = qedi->cid_que.conn_cid_tbl[iscsi_cid];
1216         if (!q_conn) {
1217                 QEDI_WARN(&qedi->dbg_ctx,
1218                           "Session no longer exists for cid=0x%x!!\n",
1219                           iscsi_cid);
1220                 return -1;
1221         }
1222
1223         switch (cqe->cqe_common.cqe_type) {
1224         case ISCSI_CQE_TYPE_SOLICITED:
1225         case ISCSI_CQE_TYPE_SOLICITED_WITH_SENSE:
1226                 qedi_cmd = qedi_get_cmd_from_tid(qedi, cqe->cqe_solicited.itid);
1227                 if (!qedi_cmd) {
1228                         rc = -1;
1229                         break;
1230                 }
1231                 INIT_LIST_HEAD(&qedi_cmd->cqe_work.list);
1232                 qedi_cmd->cqe_work.qedi = qedi;
1233                 memcpy(&qedi_cmd->cqe_work.cqe, cqe, sizeof(union iscsi_cqe));
1234                 qedi_cmd->cqe_work.que_idx = que_idx;
1235                 qedi_cmd->cqe_work.is_solicited = true;
1236                 list_add_tail(&qedi_cmd->cqe_work.list, &p->work_list);
1237                 break;
1238         case ISCSI_CQE_TYPE_UNSOLICITED:
1239         case ISCSI_CQE_TYPE_DUMMY:
1240         case ISCSI_CQE_TYPE_TASK_CLEANUP:
1241                 qedi_work = kzalloc(sizeof(*qedi_work), GFP_ATOMIC);
1242                 if (!qedi_work) {
1243                         rc = -1;
1244                         break;
1245                 }
1246                 INIT_LIST_HEAD(&qedi_work->list);
1247                 qedi_work->qedi = qedi;
1248                 memcpy(&qedi_work->cqe, cqe, sizeof(union iscsi_cqe));
1249                 qedi_work->que_idx = que_idx;
1250                 qedi_work->is_solicited = false;
1251                 list_add_tail(&qedi_work->list, &p->work_list);
1252                 break;
1253         default:
1254                 rc = -1;
1255                 QEDI_ERR(&qedi->dbg_ctx, "FW Error cqe.\n");
1256         }
1257         return rc;
1258 }
1259
1260 static bool qedi_process_completions(struct qedi_fastpath *fp)
1261 {
1262         struct qedi_ctx *qedi = fp->qedi;
1263         struct qed_sb_info *sb_info = fp->sb_info;
1264         struct status_block *sb = sb_info->sb_virt;
1265         struct qedi_percpu_s *p = NULL;
1266         struct global_queue *que;
1267         u16 prod_idx;
1268         unsigned long flags;
1269         union iscsi_cqe *cqe;
1270         int cpu;
1271         int ret;
1272
1273         /* Get the current firmware producer index */
1274         prod_idx = sb->pi_array[QEDI_PROTO_CQ_PROD_IDX];
1275
1276         if (prod_idx >= QEDI_CQ_SIZE)
1277                 prod_idx = prod_idx % QEDI_CQ_SIZE;
1278
1279         que = qedi->global_queues[fp->sb_id];
1280         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO,
1281                   "Before: global queue=%p prod_idx=%d cons_idx=%d, sb_id=%d\n",
1282                   que, prod_idx, que->cq_cons_idx, fp->sb_id);
1283
1284         qedi->intr_cpu = fp->sb_id;
1285         cpu = smp_processor_id();
1286         p = &per_cpu(qedi_percpu, cpu);
1287
1288         if (unlikely(!p->iothread))
1289                 WARN_ON(1);
1290
1291         spin_lock_irqsave(&p->p_work_lock, flags);
1292         while (que->cq_cons_idx != prod_idx) {
1293                 cqe = &que->cq[que->cq_cons_idx];
1294
1295                 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO,
1296                           "cqe=%p prod_idx=%d cons_idx=%d.\n",
1297                           cqe, prod_idx, que->cq_cons_idx);
1298
1299                 ret = qedi_queue_cqe(qedi, cqe, fp->sb_id, p);
1300                 if (ret)
1301                         QEDI_WARN(&qedi->dbg_ctx,
1302                                   "Dropping CQE 0x%x for cid=0x%x.\n",
1303                                   que->cq_cons_idx, cqe->cqe_common.conn_id);
1304
1305                 que->cq_cons_idx++;
1306                 if (que->cq_cons_idx == QEDI_CQ_SIZE)
1307                         que->cq_cons_idx = 0;
1308         }
1309         wake_up_process(p->iothread);
1310         spin_unlock_irqrestore(&p->p_work_lock, flags);
1311
1312         return true;
1313 }
1314
1315 static bool qedi_fp_has_work(struct qedi_fastpath *fp)
1316 {
1317         struct qedi_ctx *qedi = fp->qedi;
1318         struct global_queue *que;
1319         struct qed_sb_info *sb_info = fp->sb_info;
1320         struct status_block *sb = sb_info->sb_virt;
1321         u16 prod_idx;
1322
1323         barrier();
1324
1325         /* Get the current firmware producer index */
1326         prod_idx = sb->pi_array[QEDI_PROTO_CQ_PROD_IDX];
1327
1328         /* Get the pointer to the global CQ this completion is on */
1329         que = qedi->global_queues[fp->sb_id];
1330
1331         /* prod idx wrap around uint16 */
1332         if (prod_idx >= QEDI_CQ_SIZE)
1333                 prod_idx = prod_idx % QEDI_CQ_SIZE;
1334
1335         return (que->cq_cons_idx != prod_idx);
1336 }
1337
1338 /* MSI-X fastpath handler code */
1339 static irqreturn_t qedi_msix_handler(int irq, void *dev_id)
1340 {
1341         struct qedi_fastpath *fp = dev_id;
1342         struct qedi_ctx *qedi = fp->qedi;
1343         bool wake_io_thread = true;
1344
1345         qed_sb_ack(fp->sb_info, IGU_INT_DISABLE, 0);
1346
1347 process_again:
1348         wake_io_thread = qedi_process_completions(fp);
1349         if (wake_io_thread) {
1350                 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
1351                           "process already running\n");
1352         }
1353
1354         if (!qedi_fp_has_work(fp))
1355                 qed_sb_update_sb_idx(fp->sb_info);
1356
1357         /* Check for more work */
1358         rmb();
1359
1360         if (!qedi_fp_has_work(fp))
1361                 qed_sb_ack(fp->sb_info, IGU_INT_ENABLE, 1);
1362         else
1363                 goto process_again;
1364
1365         return IRQ_HANDLED;
1366 }
1367
1368 /* simd handler for MSI/INTa */
1369 static void qedi_simd_int_handler(void *cookie)
1370 {
1371         /* Cookie is qedi_ctx struct */
1372         struct qedi_ctx *qedi = (struct qedi_ctx *)cookie;
1373
1374         QEDI_WARN(&qedi->dbg_ctx, "qedi=%p.\n", qedi);
1375 }
1376
1377 #define QEDI_SIMD_HANDLER_NUM           0
1378 static void qedi_sync_free_irqs(struct qedi_ctx *qedi)
1379 {
1380         int i;
1381         u16 idx;
1382
1383         if (qedi->int_info.msix_cnt) {
1384                 for (i = 0; i < qedi->int_info.used_cnt; i++) {
1385                         idx = i * qedi->dev_info.common.num_hwfns +
1386                         qedi_ops->common->get_affin_hwfn_idx(qedi->cdev);
1387
1388                         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
1389                                   "Freeing IRQ #%d vector_idx=%d.\n", i, idx);
1390
1391                         synchronize_irq(qedi->int_info.msix[idx].vector);
1392                         irq_set_affinity_hint(qedi->int_info.msix[idx].vector,
1393                                               NULL);
1394                         free_irq(qedi->int_info.msix[idx].vector,
1395                                  &qedi->fp_array[i]);
1396                 }
1397         } else {
1398                 qedi_ops->common->simd_handler_clean(qedi->cdev,
1399                                                      QEDI_SIMD_HANDLER_NUM);
1400         }
1401
1402         qedi->int_info.used_cnt = 0;
1403         qedi_ops->common->set_fp_int(qedi->cdev, 0);
1404 }
1405
1406 static int qedi_request_msix_irq(struct qedi_ctx *qedi)
1407 {
1408         int i, rc, cpu;
1409         u16 idx;
1410
1411         cpu = cpumask_first(cpu_online_mask);
1412         for (i = 0; i < qedi->msix_count; i++) {
1413                 idx = i * qedi->dev_info.common.num_hwfns +
1414                           qedi_ops->common->get_affin_hwfn_idx(qedi->cdev);
1415
1416                 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
1417                           "dev_info: num_hwfns=%d affin_hwfn_idx=%d.\n",
1418                           qedi->dev_info.common.num_hwfns,
1419                           qedi_ops->common->get_affin_hwfn_idx(qedi->cdev));
1420
1421                 rc = request_irq(qedi->int_info.msix[idx].vector,
1422                                  qedi_msix_handler, 0, "qedi",
1423                                  &qedi->fp_array[i]);
1424                 if (rc) {
1425                         QEDI_WARN(&qedi->dbg_ctx, "request_irq failed.\n");
1426                         qedi_sync_free_irqs(qedi);
1427                         return rc;
1428                 }
1429                 qedi->int_info.used_cnt++;
1430                 rc = irq_set_affinity_hint(qedi->int_info.msix[idx].vector,
1431                                            get_cpu_mask(cpu));
1432                 cpu = cpumask_next(cpu, cpu_online_mask);
1433         }
1434
1435         return 0;
1436 }
1437
1438 static int qedi_setup_int(struct qedi_ctx *qedi)
1439 {
1440         int rc = 0;
1441
1442         rc = qedi_ops->common->set_fp_int(qedi->cdev, qedi->num_queues);
1443         if (rc < 0)
1444                 goto exit_setup_int;
1445
1446         qedi->msix_count = rc;
1447
1448         rc = qedi_ops->common->get_fp_int(qedi->cdev, &qedi->int_info);
1449         if (rc)
1450                 goto exit_setup_int;
1451
1452         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
1453                   "Number of msix_cnt = 0x%x num of cpus = 0x%x\n",
1454                    qedi->int_info.msix_cnt, num_online_cpus());
1455
1456         if (qedi->int_info.msix_cnt) {
1457                 rc = qedi_request_msix_irq(qedi);
1458                 goto exit_setup_int;
1459         } else {
1460                 qedi_ops->common->simd_handler_config(qedi->cdev, &qedi,
1461                                                       QEDI_SIMD_HANDLER_NUM,
1462                                                       qedi_simd_int_handler);
1463                 qedi->int_info.used_cnt = 1;
1464         }
1465
1466 exit_setup_int:
1467         return rc;
1468 }
1469
1470 static void qedi_free_nvm_iscsi_cfg(struct qedi_ctx *qedi)
1471 {
1472         if (qedi->iscsi_image)
1473                 dma_free_coherent(&qedi->pdev->dev,
1474                                   sizeof(struct qedi_nvm_iscsi_image),
1475                                   qedi->iscsi_image, qedi->nvm_buf_dma);
1476 }
1477
1478 static int qedi_alloc_nvm_iscsi_cfg(struct qedi_ctx *qedi)
1479 {
1480         qedi->iscsi_image = dma_alloc_coherent(&qedi->pdev->dev,
1481                                                sizeof(struct qedi_nvm_iscsi_image),
1482                                                &qedi->nvm_buf_dma, GFP_KERNEL);
1483         if (!qedi->iscsi_image) {
1484                 QEDI_ERR(&qedi->dbg_ctx, "Could not allocate NVM BUF.\n");
1485                 return -ENOMEM;
1486         }
1487         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
1488                   "NVM BUF addr=0x%p dma=0x%llx.\n", qedi->iscsi_image,
1489                   qedi->nvm_buf_dma);
1490
1491         return 0;
1492 }
1493
1494 static void qedi_free_bdq(struct qedi_ctx *qedi)
1495 {
1496         int i;
1497
1498         if (qedi->bdq_pbl_list)
1499                 dma_free_coherent(&qedi->pdev->dev, QEDI_PAGE_SIZE,
1500                                   qedi->bdq_pbl_list, qedi->bdq_pbl_list_dma);
1501
1502         if (qedi->bdq_pbl)
1503                 dma_free_coherent(&qedi->pdev->dev, qedi->bdq_pbl_mem_size,
1504                                   qedi->bdq_pbl, qedi->bdq_pbl_dma);
1505
1506         for (i = 0; i < QEDI_BDQ_NUM; i++) {
1507                 if (qedi->bdq[i].buf_addr) {
1508                         dma_free_coherent(&qedi->pdev->dev, QEDI_BDQ_BUF_SIZE,
1509                                           qedi->bdq[i].buf_addr,
1510                                           qedi->bdq[i].buf_dma);
1511                 }
1512         }
1513 }
1514
1515 static void qedi_free_global_queues(struct qedi_ctx *qedi)
1516 {
1517         int i;
1518         struct global_queue **gl = qedi->global_queues;
1519
1520         for (i = 0; i < qedi->num_queues; i++) {
1521                 if (!gl[i])
1522                         continue;
1523
1524                 if (gl[i]->cq)
1525                         dma_free_coherent(&qedi->pdev->dev, gl[i]->cq_mem_size,
1526                                           gl[i]->cq, gl[i]->cq_dma);
1527                 if (gl[i]->cq_pbl)
1528                         dma_free_coherent(&qedi->pdev->dev, gl[i]->cq_pbl_size,
1529                                           gl[i]->cq_pbl, gl[i]->cq_pbl_dma);
1530
1531                 kfree(gl[i]);
1532         }
1533         qedi_free_bdq(qedi);
1534         qedi_free_nvm_iscsi_cfg(qedi);
1535 }
1536
1537 static int qedi_alloc_bdq(struct qedi_ctx *qedi)
1538 {
1539         int i;
1540         struct scsi_bd *pbl;
1541         u64 *list;
1542
1543         /* Alloc dma memory for BDQ buffers */
1544         for (i = 0; i < QEDI_BDQ_NUM; i++) {
1545                 qedi->bdq[i].buf_addr =
1546                                 dma_alloc_coherent(&qedi->pdev->dev,
1547                                                    QEDI_BDQ_BUF_SIZE,
1548                                                    &qedi->bdq[i].buf_dma,
1549                                                    GFP_KERNEL);
1550                 if (!qedi->bdq[i].buf_addr) {
1551                         QEDI_ERR(&qedi->dbg_ctx,
1552                                  "Could not allocate BDQ buffer %d.\n", i);
1553                         return -ENOMEM;
1554                 }
1555         }
1556
1557         /* Alloc dma memory for BDQ page buffer list */
1558         qedi->bdq_pbl_mem_size = QEDI_BDQ_NUM * sizeof(struct scsi_bd);
1559         qedi->bdq_pbl_mem_size = ALIGN(qedi->bdq_pbl_mem_size, QEDI_PAGE_SIZE);
1560         qedi->rq_num_entries = qedi->bdq_pbl_mem_size / sizeof(struct scsi_bd);
1561
1562         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, "rq_num_entries = %d.\n",
1563                   qedi->rq_num_entries);
1564
1565         qedi->bdq_pbl = dma_alloc_coherent(&qedi->pdev->dev,
1566                                            qedi->bdq_pbl_mem_size,
1567                                            &qedi->bdq_pbl_dma, GFP_KERNEL);
1568         if (!qedi->bdq_pbl) {
1569                 QEDI_ERR(&qedi->dbg_ctx, "Could not allocate BDQ PBL.\n");
1570                 return -ENOMEM;
1571         }
1572
1573         /*
1574          * Populate BDQ PBL with physical and virtual address of individual
1575          * BDQ buffers
1576          */
1577         pbl = (struct scsi_bd  *)qedi->bdq_pbl;
1578         for (i = 0; i < QEDI_BDQ_NUM; i++) {
1579                 pbl->address.hi =
1580                                 cpu_to_le32(QEDI_U64_HI(qedi->bdq[i].buf_dma));
1581                 pbl->address.lo =
1582                                 cpu_to_le32(QEDI_U64_LO(qedi->bdq[i].buf_dma));
1583                 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
1584                           "pbl [0x%p] pbl->address hi [0x%llx] lo [0x%llx], idx [%d]\n",
1585                           pbl, pbl->address.hi, pbl->address.lo, i);
1586                 pbl->opaque.iscsi_opaque.reserved_zero[0] = 0;
1587                 pbl->opaque.iscsi_opaque.reserved_zero[1] = 0;
1588                 pbl->opaque.iscsi_opaque.reserved_zero[2] = 0;
1589                 pbl->opaque.iscsi_opaque.opaque = cpu_to_le16(i);
1590                 pbl++;
1591         }
1592
1593         /* Allocate list of PBL pages */
1594         qedi->bdq_pbl_list = dma_alloc_coherent(&qedi->pdev->dev,
1595                                                 QEDI_PAGE_SIZE,
1596                                                 &qedi->bdq_pbl_list_dma,
1597                                                 GFP_KERNEL);
1598         if (!qedi->bdq_pbl_list) {
1599                 QEDI_ERR(&qedi->dbg_ctx,
1600                          "Could not allocate list of PBL pages.\n");
1601                 return -ENOMEM;
1602         }
1603
1604         /*
1605          * Now populate PBL list with pages that contain pointers to the
1606          * individual buffers.
1607          */
1608         qedi->bdq_pbl_list_num_entries = qedi->bdq_pbl_mem_size /
1609                                          QEDI_PAGE_SIZE;
1610         list = (u64 *)qedi->bdq_pbl_list;
1611         for (i = 0; i < qedi->bdq_pbl_list_num_entries; i++) {
1612                 *list = qedi->bdq_pbl_dma;
1613                 list++;
1614         }
1615
1616         return 0;
1617 }
1618
1619 static int qedi_alloc_global_queues(struct qedi_ctx *qedi)
1620 {
1621         u32 *list;
1622         int i;
1623         int status;
1624         u32 *pbl;
1625         dma_addr_t page;
1626         int num_pages;
1627
1628         /*
1629          * Number of global queues (CQ / RQ). This should
1630          * be <= number of available MSIX vectors for the PF
1631          */
1632         if (!qedi->num_queues) {
1633                 QEDI_ERR(&qedi->dbg_ctx, "No MSI-X vectors available!\n");
1634                 return -ENOMEM;
1635         }
1636
1637         /* Make sure we allocated the PBL that will contain the physical
1638          * addresses of our queues
1639          */
1640         if (!qedi->p_cpuq) {
1641                 status = -EINVAL;
1642                 goto mem_alloc_failure;
1643         }
1644
1645         qedi->global_queues = kzalloc((sizeof(struct global_queue *) *
1646                                        qedi->num_queues), GFP_KERNEL);
1647         if (!qedi->global_queues) {
1648                 QEDI_ERR(&qedi->dbg_ctx,
1649                          "Unable to allocate global queues array ptr memory\n");
1650                 return -ENOMEM;
1651         }
1652         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
1653                   "qedi->global_queues=%p.\n", qedi->global_queues);
1654
1655         /* Allocate DMA coherent buffers for BDQ */
1656         status = qedi_alloc_bdq(qedi);
1657         if (status)
1658                 goto mem_alloc_failure;
1659
1660         /* Allocate DMA coherent buffers for NVM_ISCSI_CFG */
1661         status = qedi_alloc_nvm_iscsi_cfg(qedi);
1662         if (status)
1663                 goto mem_alloc_failure;
1664
1665         /* Allocate a CQ and an associated PBL for each MSI-X
1666          * vector.
1667          */
1668         for (i = 0; i < qedi->num_queues; i++) {
1669                 qedi->global_queues[i] =
1670                                         kzalloc(sizeof(*qedi->global_queues[0]),
1671                                                 GFP_KERNEL);
1672                 if (!qedi->global_queues[i]) {
1673                         QEDI_ERR(&qedi->dbg_ctx,
1674                                  "Unable to allocation global queue %d.\n", i);
1675                         status = -ENOMEM;
1676                         goto mem_alloc_failure;
1677                 }
1678
1679                 qedi->global_queues[i]->cq_mem_size =
1680                     (QEDI_CQ_SIZE + 8) * sizeof(union iscsi_cqe);
1681                 qedi->global_queues[i]->cq_mem_size =
1682                     (qedi->global_queues[i]->cq_mem_size +
1683                     (QEDI_PAGE_SIZE - 1));
1684
1685                 qedi->global_queues[i]->cq_pbl_size =
1686                     (qedi->global_queues[i]->cq_mem_size /
1687                     QEDI_PAGE_SIZE) * sizeof(void *);
1688                 qedi->global_queues[i]->cq_pbl_size =
1689                     (qedi->global_queues[i]->cq_pbl_size +
1690                     (QEDI_PAGE_SIZE - 1));
1691
1692                 qedi->global_queues[i]->cq = dma_alloc_coherent(&qedi->pdev->dev,
1693                                                                 qedi->global_queues[i]->cq_mem_size,
1694                                                                 &qedi->global_queues[i]->cq_dma,
1695                                                                 GFP_KERNEL);
1696
1697                 if (!qedi->global_queues[i]->cq) {
1698                         QEDI_WARN(&qedi->dbg_ctx,
1699                                   "Could not allocate cq.\n");
1700                         status = -ENOMEM;
1701                         goto mem_alloc_failure;
1702                 }
1703                 qedi->global_queues[i]->cq_pbl = dma_alloc_coherent(&qedi->pdev->dev,
1704                                                                     qedi->global_queues[i]->cq_pbl_size,
1705                                                                     &qedi->global_queues[i]->cq_pbl_dma,
1706                                                                     GFP_KERNEL);
1707
1708                 if (!qedi->global_queues[i]->cq_pbl) {
1709                         QEDI_WARN(&qedi->dbg_ctx,
1710                                   "Could not allocate cq PBL.\n");
1711                         status = -ENOMEM;
1712                         goto mem_alloc_failure;
1713                 }
1714
1715                 /* Create PBL */
1716                 num_pages = qedi->global_queues[i]->cq_mem_size /
1717                     QEDI_PAGE_SIZE;
1718                 page = qedi->global_queues[i]->cq_dma;
1719                 pbl = (u32 *)qedi->global_queues[i]->cq_pbl;
1720
1721                 while (num_pages--) {
1722                         *pbl = (u32)page;
1723                         pbl++;
1724                         *pbl = (u32)((u64)page >> 32);
1725                         pbl++;
1726                         page += QEDI_PAGE_SIZE;
1727                 }
1728         }
1729
1730         list = (u32 *)qedi->p_cpuq;
1731
1732         /*
1733          * The list is built as follows: CQ#0 PBL pointer, RQ#0 PBL pointer,
1734          * CQ#1 PBL pointer, RQ#1 PBL pointer, etc.  Each PBL pointer points
1735          * to the physical address which contains an array of pointers to the
1736          * physical addresses of the specific queue pages.
1737          */
1738         for (i = 0; i < qedi->num_queues; i++) {
1739                 *list = (u32)qedi->global_queues[i]->cq_pbl_dma;
1740                 list++;
1741                 *list = (u32)((u64)qedi->global_queues[i]->cq_pbl_dma >> 32);
1742                 list++;
1743
1744                 *list = (u32)0;
1745                 list++;
1746                 *list = (u32)((u64)0 >> 32);
1747                 list++;
1748         }
1749
1750         return 0;
1751
1752 mem_alloc_failure:
1753         qedi_free_global_queues(qedi);
1754         return status;
1755 }
1756
1757 int qedi_alloc_sq(struct qedi_ctx *qedi, struct qedi_endpoint *ep)
1758 {
1759         int rval = 0;
1760         u32 *pbl;
1761         dma_addr_t page;
1762         int num_pages;
1763
1764         if (!ep)
1765                 return -EIO;
1766
1767         /* Calculate appropriate queue and PBL sizes */
1768         ep->sq_mem_size = QEDI_SQ_SIZE * sizeof(struct iscsi_wqe);
1769         ep->sq_mem_size += QEDI_PAGE_SIZE - 1;
1770
1771         ep->sq_pbl_size = (ep->sq_mem_size / QEDI_PAGE_SIZE) * sizeof(void *);
1772         ep->sq_pbl_size = ep->sq_pbl_size + QEDI_PAGE_SIZE;
1773
1774         ep->sq = dma_alloc_coherent(&qedi->pdev->dev, ep->sq_mem_size,
1775                                     &ep->sq_dma, GFP_KERNEL);
1776         if (!ep->sq) {
1777                 QEDI_WARN(&qedi->dbg_ctx,
1778                           "Could not allocate send queue.\n");
1779                 rval = -ENOMEM;
1780                 goto out;
1781         }
1782         ep->sq_pbl = dma_alloc_coherent(&qedi->pdev->dev, ep->sq_pbl_size,
1783                                         &ep->sq_pbl_dma, GFP_KERNEL);
1784         if (!ep->sq_pbl) {
1785                 QEDI_WARN(&qedi->dbg_ctx,
1786                           "Could not allocate send queue PBL.\n");
1787                 rval = -ENOMEM;
1788                 goto out_free_sq;
1789         }
1790
1791         /* Create PBL */
1792         num_pages = ep->sq_mem_size / QEDI_PAGE_SIZE;
1793         page = ep->sq_dma;
1794         pbl = (u32 *)ep->sq_pbl;
1795
1796         while (num_pages--) {
1797                 *pbl = (u32)page;
1798                 pbl++;
1799                 *pbl = (u32)((u64)page >> 32);
1800                 pbl++;
1801                 page += QEDI_PAGE_SIZE;
1802         }
1803
1804         return rval;
1805
1806 out_free_sq:
1807         dma_free_coherent(&qedi->pdev->dev, ep->sq_mem_size, ep->sq,
1808                           ep->sq_dma);
1809 out:
1810         return rval;
1811 }
1812
1813 void qedi_free_sq(struct qedi_ctx *qedi, struct qedi_endpoint *ep)
1814 {
1815         if (ep->sq_pbl)
1816                 dma_free_coherent(&qedi->pdev->dev, ep->sq_pbl_size, ep->sq_pbl,
1817                                   ep->sq_pbl_dma);
1818         if (ep->sq)
1819                 dma_free_coherent(&qedi->pdev->dev, ep->sq_mem_size, ep->sq,
1820                                   ep->sq_dma);
1821 }
1822
1823 int qedi_get_task_idx(struct qedi_ctx *qedi)
1824 {
1825         s16 tmp_idx;
1826
1827 again:
1828         tmp_idx = find_first_zero_bit(qedi->task_idx_map,
1829                                       MAX_ISCSI_TASK_ENTRIES);
1830
1831         if (tmp_idx >= MAX_ISCSI_TASK_ENTRIES) {
1832                 QEDI_ERR(&qedi->dbg_ctx, "FW task context pool is full.\n");
1833                 tmp_idx = -1;
1834                 goto err_idx;
1835         }
1836
1837         if (test_and_set_bit(tmp_idx, qedi->task_idx_map))
1838                 goto again;
1839
1840 err_idx:
1841         return tmp_idx;
1842 }
1843
1844 void qedi_clear_task_idx(struct qedi_ctx *qedi, int idx)
1845 {
1846         if (!test_and_clear_bit(idx, qedi->task_idx_map))
1847                 QEDI_ERR(&qedi->dbg_ctx,
1848                          "FW task context, already cleared, tid=0x%x\n", idx);
1849 }
1850
1851 void qedi_update_itt_map(struct qedi_ctx *qedi, u32 tid, u32 proto_itt,
1852                          struct qedi_cmd *cmd)
1853 {
1854         qedi->itt_map[tid].itt = proto_itt;
1855         qedi->itt_map[tid].p_cmd = cmd;
1856
1857         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
1858                   "update itt map tid=0x%x, with proto itt=0x%x\n", tid,
1859                   qedi->itt_map[tid].itt);
1860 }
1861
1862 void qedi_get_task_tid(struct qedi_ctx *qedi, u32 itt, s16 *tid)
1863 {
1864         u16 i;
1865
1866         for (i = 0; i < MAX_ISCSI_TASK_ENTRIES; i++) {
1867                 if (qedi->itt_map[i].itt == itt) {
1868                         *tid = i;
1869                         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
1870                                   "Ref itt=0x%x, found at tid=0x%x\n",
1871                                   itt, *tid);
1872                         return;
1873                 }
1874         }
1875
1876         WARN_ON(1);
1877 }
1878
1879 void qedi_get_proto_itt(struct qedi_ctx *qedi, u32 tid, u32 *proto_itt)
1880 {
1881         *proto_itt = qedi->itt_map[tid].itt;
1882         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
1883                   "Get itt map tid [0x%x with proto itt[0x%x]",
1884                   tid, *proto_itt);
1885 }
1886
1887 struct qedi_cmd *qedi_get_cmd_from_tid(struct qedi_ctx *qedi, u32 tid)
1888 {
1889         struct qedi_cmd *cmd = NULL;
1890
1891         if (tid >= MAX_ISCSI_TASK_ENTRIES)
1892                 return NULL;
1893
1894         cmd = qedi->itt_map[tid].p_cmd;
1895         if (cmd->task_id != tid)
1896                 return NULL;
1897
1898         qedi->itt_map[tid].p_cmd = NULL;
1899
1900         return cmd;
1901 }
1902
1903 static int qedi_alloc_itt(struct qedi_ctx *qedi)
1904 {
1905         qedi->itt_map = kcalloc(MAX_ISCSI_TASK_ENTRIES,
1906                                 sizeof(struct qedi_itt_map), GFP_KERNEL);
1907         if (!qedi->itt_map) {
1908                 QEDI_ERR(&qedi->dbg_ctx,
1909                          "Unable to allocate itt map array memory\n");
1910                 return -ENOMEM;
1911         }
1912         return 0;
1913 }
1914
1915 static void qedi_free_itt(struct qedi_ctx *qedi)
1916 {
1917         kfree(qedi->itt_map);
1918 }
1919
1920 static struct qed_ll2_cb_ops qedi_ll2_cb_ops = {
1921         .rx_cb = qedi_ll2_rx,
1922         .tx_cb = NULL,
1923 };
1924
1925 static int qedi_percpu_io_thread(void *arg)
1926 {
1927         struct qedi_percpu_s *p = arg;
1928         struct qedi_work *work, *tmp;
1929         unsigned long flags;
1930         LIST_HEAD(work_list);
1931
1932         set_user_nice(current, -20);
1933
1934         while (!kthread_should_stop()) {
1935                 spin_lock_irqsave(&p->p_work_lock, flags);
1936                 while (!list_empty(&p->work_list)) {
1937                         list_splice_init(&p->work_list, &work_list);
1938                         spin_unlock_irqrestore(&p->p_work_lock, flags);
1939
1940                         list_for_each_entry_safe(work, tmp, &work_list, list) {
1941                                 list_del_init(&work->list);
1942                                 qedi_fp_process_cqes(work);
1943                                 if (!work->is_solicited)
1944                                         kfree(work);
1945                         }
1946                         cond_resched();
1947                         spin_lock_irqsave(&p->p_work_lock, flags);
1948                 }
1949                 set_current_state(TASK_INTERRUPTIBLE);
1950                 spin_unlock_irqrestore(&p->p_work_lock, flags);
1951                 schedule();
1952         }
1953         __set_current_state(TASK_RUNNING);
1954
1955         return 0;
1956 }
1957
1958 static int qedi_cpu_online(unsigned int cpu)
1959 {
1960         struct qedi_percpu_s *p = this_cpu_ptr(&qedi_percpu);
1961         struct task_struct *thread;
1962
1963         thread = kthread_create_on_node(qedi_percpu_io_thread, (void *)p,
1964                                         cpu_to_node(cpu),
1965                                         "qedi_thread/%d", cpu);
1966         if (IS_ERR(thread))
1967                 return PTR_ERR(thread);
1968
1969         kthread_bind(thread, cpu);
1970         p->iothread = thread;
1971         wake_up_process(thread);
1972         return 0;
1973 }
1974
1975 static int qedi_cpu_offline(unsigned int cpu)
1976 {
1977         struct qedi_percpu_s *p = this_cpu_ptr(&qedi_percpu);
1978         struct qedi_work *work, *tmp;
1979         struct task_struct *thread;
1980         unsigned long flags;
1981
1982         spin_lock_irqsave(&p->p_work_lock, flags);
1983         thread = p->iothread;
1984         p->iothread = NULL;
1985
1986         list_for_each_entry_safe(work, tmp, &p->work_list, list) {
1987                 list_del_init(&work->list);
1988                 qedi_fp_process_cqes(work);
1989                 if (!work->is_solicited)
1990                         kfree(work);
1991         }
1992
1993         spin_unlock_irqrestore(&p->p_work_lock, flags);
1994         if (thread)
1995                 kthread_stop(thread);
1996         return 0;
1997 }
1998
1999 void qedi_reset_host_mtu(struct qedi_ctx *qedi, u16 mtu)
2000 {
2001         struct qed_ll2_params params;
2002
2003         qedi_recover_all_conns(qedi);
2004
2005         qedi_ops->ll2->stop(qedi->cdev);
2006         qedi_ll2_free_skbs(qedi);
2007
2008         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, "old MTU %u, new MTU %u\n",
2009                   qedi->ll2_mtu, mtu);
2010         memset(&params, 0, sizeof(params));
2011         qedi->ll2_mtu = mtu;
2012         params.mtu = qedi->ll2_mtu + IPV6_HDR_LEN + TCP_HDR_LEN;
2013         params.drop_ttl0_packets = 0;
2014         params.rx_vlan_stripping = 1;
2015         ether_addr_copy(params.ll2_mac_address, qedi->dev_info.common.hw_mac);
2016         qedi_ops->ll2->start(qedi->cdev, &params);
2017 }
2018
2019 /*
2020  * qedi_get_nvram_block: - Scan through the iSCSI NVRAM block (while accounting
2021  * for gaps) for the matching absolute-pf-id of the QEDI device.
2022  */
2023 static struct nvm_iscsi_block *
2024 qedi_get_nvram_block(struct qedi_ctx *qedi)
2025 {
2026         int i;
2027         u8 pf;
2028         u32 flags;
2029         struct nvm_iscsi_block *block;
2030
2031         pf = qedi->dev_info.common.abs_pf_id;
2032         block = &qedi->iscsi_image->iscsi_cfg.block[0];
2033         for (i = 0; i < NUM_OF_ISCSI_PF_SUPPORTED; i++, block++) {
2034                 flags = ((block->id) & NVM_ISCSI_CFG_BLK_CTRL_FLAG_MASK) >>
2035                         NVM_ISCSI_CFG_BLK_CTRL_FLAG_OFFSET;
2036                 if (flags & (NVM_ISCSI_CFG_BLK_CTRL_FLAG_IS_NOT_EMPTY |
2037                                 NVM_ISCSI_CFG_BLK_CTRL_FLAG_PF_MAPPED) &&
2038                         (pf == (block->id & NVM_ISCSI_CFG_BLK_MAPPED_PF_ID_MASK)
2039                                 >> NVM_ISCSI_CFG_BLK_MAPPED_PF_ID_OFFSET))
2040                         return block;
2041         }
2042         return NULL;
2043 }
2044
2045 static ssize_t qedi_show_boot_eth_info(void *data, int type, char *buf)
2046 {
2047         struct qedi_ctx *qedi = data;
2048         struct nvm_iscsi_initiator *initiator;
2049         int rc = 1;
2050         u32 ipv6_en, dhcp_en, ip_len;
2051         struct nvm_iscsi_block *block;
2052         char *fmt, *ip, *sub, *gw;
2053
2054         block = qedi_get_nvram_block(qedi);
2055         if (!block)
2056                 return 0;
2057
2058         initiator = &block->initiator;
2059         ipv6_en = block->generic.ctrl_flags &
2060                   NVM_ISCSI_CFG_GEN_IPV6_ENABLED;
2061         dhcp_en = block->generic.ctrl_flags &
2062                   NVM_ISCSI_CFG_GEN_DHCP_TCPIP_CONFIG_ENABLED;
2063         /* Static IP assignments. */
2064         fmt = ipv6_en ? "%pI6\n" : "%pI4\n";
2065         ip = ipv6_en ? initiator->ipv6.addr.byte : initiator->ipv4.addr.byte;
2066         ip_len = ipv6_en ? IPV6_LEN : IPV4_LEN;
2067         sub = ipv6_en ? initiator->ipv6.subnet_mask.byte :
2068               initiator->ipv4.subnet_mask.byte;
2069         gw = ipv6_en ? initiator->ipv6.gateway.byte :
2070              initiator->ipv4.gateway.byte;
2071         /* DHCP IP adjustments. */
2072         fmt = dhcp_en ? "%s\n" : fmt;
2073         if (dhcp_en) {
2074                 ip = ipv6_en ? "0::0" : "0.0.0.0";
2075                 sub = ip;
2076                 gw = ip;
2077                 ip_len = ipv6_en ? 5 : 8;
2078         }
2079
2080         switch (type) {
2081         case ISCSI_BOOT_ETH_IP_ADDR:
2082                 rc = snprintf(buf, ip_len, fmt, ip);
2083                 break;
2084         case ISCSI_BOOT_ETH_SUBNET_MASK:
2085                 rc = snprintf(buf, ip_len, fmt, sub);
2086                 break;
2087         case ISCSI_BOOT_ETH_GATEWAY:
2088                 rc = snprintf(buf, ip_len, fmt, gw);
2089                 break;
2090         case ISCSI_BOOT_ETH_FLAGS:
2091                 rc = snprintf(buf, 3, "%d\n", (char)SYSFS_FLAG_FW_SEL_BOOT);
2092                 break;
2093         case ISCSI_BOOT_ETH_INDEX:
2094                 rc = snprintf(buf, 3, "0\n");
2095                 break;
2096         case ISCSI_BOOT_ETH_MAC:
2097                 rc = sysfs_format_mac(buf, qedi->mac, ETH_ALEN);
2098                 break;
2099         case ISCSI_BOOT_ETH_VLAN:
2100                 rc = snprintf(buf, 12, "%d\n",
2101                               GET_FIELD2(initiator->generic_cont0,
2102                                          NVM_ISCSI_CFG_INITIATOR_VLAN));
2103                 break;
2104         case ISCSI_BOOT_ETH_ORIGIN:
2105                 if (dhcp_en)
2106                         rc = snprintf(buf, 3, "3\n");
2107                 break;
2108         default:
2109                 rc = 0;
2110                 break;
2111         }
2112
2113         return rc;
2114 }
2115
2116 static umode_t qedi_eth_get_attr_visibility(void *data, int type)
2117 {
2118         int rc = 1;
2119
2120         switch (type) {
2121         case ISCSI_BOOT_ETH_FLAGS:
2122         case ISCSI_BOOT_ETH_MAC:
2123         case ISCSI_BOOT_ETH_INDEX:
2124         case ISCSI_BOOT_ETH_IP_ADDR:
2125         case ISCSI_BOOT_ETH_SUBNET_MASK:
2126         case ISCSI_BOOT_ETH_GATEWAY:
2127         case ISCSI_BOOT_ETH_ORIGIN:
2128         case ISCSI_BOOT_ETH_VLAN:
2129                 rc = 0444;
2130                 break;
2131         default:
2132                 rc = 0;
2133                 break;
2134         }
2135         return rc;
2136 }
2137
2138 static ssize_t qedi_show_boot_ini_info(void *data, int type, char *buf)
2139 {
2140         struct qedi_ctx *qedi = data;
2141         struct nvm_iscsi_initiator *initiator;
2142         int rc;
2143         struct nvm_iscsi_block *block;
2144
2145         block = qedi_get_nvram_block(qedi);
2146         if (!block)
2147                 return 0;
2148
2149         initiator = &block->initiator;
2150
2151         switch (type) {
2152         case ISCSI_BOOT_INI_INITIATOR_NAME:
2153                 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_ISCSI_NAME_MAX_LEN,
2154                              initiator->initiator_name.byte);
2155                 break;
2156         default:
2157                 rc = 0;
2158                 break;
2159         }
2160         return rc;
2161 }
2162
2163 static umode_t qedi_ini_get_attr_visibility(void *data, int type)
2164 {
2165         int rc;
2166
2167         switch (type) {
2168         case ISCSI_BOOT_INI_INITIATOR_NAME:
2169                 rc = 0444;
2170                 break;
2171         default:
2172                 rc = 0;
2173                 break;
2174         }
2175         return rc;
2176 }
2177
2178 static ssize_t
2179 qedi_show_boot_tgt_info(struct qedi_ctx *qedi, int type,
2180                         char *buf, enum qedi_nvm_tgts idx)
2181 {
2182         int rc = 1;
2183         u32 ctrl_flags, ipv6_en, chap_en, mchap_en, ip_len;
2184         struct nvm_iscsi_block *block;
2185         char *chap_name, *chap_secret;
2186         char *mchap_name, *mchap_secret;
2187
2188         block = qedi_get_nvram_block(qedi);
2189         if (!block)
2190                 goto exit_show_tgt_info;
2191
2192         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_EVT,
2193                   "Port:%d, tgt_idx:%d\n",
2194                   GET_FIELD2(block->id, NVM_ISCSI_CFG_BLK_MAPPED_PF_ID), idx);
2195
2196         ctrl_flags = block->target[idx].ctrl_flags &
2197                      NVM_ISCSI_CFG_TARGET_ENABLED;
2198
2199         if (!ctrl_flags) {
2200                 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_EVT,
2201                           "Target disabled\n");
2202                 goto exit_show_tgt_info;
2203         }
2204
2205         ipv6_en = block->generic.ctrl_flags &
2206                   NVM_ISCSI_CFG_GEN_IPV6_ENABLED;
2207         ip_len = ipv6_en ? IPV6_LEN : IPV4_LEN;
2208         chap_en = block->generic.ctrl_flags &
2209                   NVM_ISCSI_CFG_GEN_CHAP_ENABLED;
2210         chap_name = chap_en ? block->initiator.chap_name.byte : NULL;
2211         chap_secret = chap_en ? block->initiator.chap_password.byte : NULL;
2212
2213         mchap_en = block->generic.ctrl_flags &
2214                   NVM_ISCSI_CFG_GEN_CHAP_MUTUAL_ENABLED;
2215         mchap_name = mchap_en ? block->target[idx].chap_name.byte : NULL;
2216         mchap_secret = mchap_en ? block->target[idx].chap_password.byte : NULL;
2217
2218         switch (type) {
2219         case ISCSI_BOOT_TGT_NAME:
2220                 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_ISCSI_NAME_MAX_LEN,
2221                              block->target[idx].target_name.byte);
2222                 break;
2223         case ISCSI_BOOT_TGT_IP_ADDR:
2224                 if (ipv6_en)
2225                         rc = snprintf(buf, ip_len, "%pI6\n",
2226                                       block->target[idx].ipv6_addr.byte);
2227                 else
2228                         rc = snprintf(buf, ip_len, "%pI4\n",
2229                                       block->target[idx].ipv4_addr.byte);
2230                 break;
2231         case ISCSI_BOOT_TGT_PORT:
2232                 rc = snprintf(buf, 12, "%d\n",
2233                               GET_FIELD2(block->target[idx].generic_cont0,
2234                                          NVM_ISCSI_CFG_TARGET_TCP_PORT));
2235                 break;
2236         case ISCSI_BOOT_TGT_LUN:
2237                 rc = snprintf(buf, 22, "%.*d\n",
2238                               block->target[idx].lun.value[1],
2239                               block->target[idx].lun.value[0]);
2240                 break;
2241         case ISCSI_BOOT_TGT_CHAP_NAME:
2242                 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_CHAP_NAME_MAX_LEN,
2243                              chap_name);
2244                 break;
2245         case ISCSI_BOOT_TGT_CHAP_SECRET:
2246                 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_CHAP_PWD_MAX_LEN,
2247                              chap_secret);
2248                 break;
2249         case ISCSI_BOOT_TGT_REV_CHAP_NAME:
2250                 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_CHAP_NAME_MAX_LEN,
2251                              mchap_name);
2252                 break;
2253         case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
2254                 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_CHAP_PWD_MAX_LEN,
2255                              mchap_secret);
2256                 break;
2257         case ISCSI_BOOT_TGT_FLAGS:
2258                 rc = snprintf(buf, 3, "%d\n", (char)SYSFS_FLAG_FW_SEL_BOOT);
2259                 break;
2260         case ISCSI_BOOT_TGT_NIC_ASSOC:
2261                 rc = snprintf(buf, 3, "0\n");
2262                 break;
2263         default:
2264                 rc = 0;
2265                 break;
2266         }
2267
2268 exit_show_tgt_info:
2269         return rc;
2270 }
2271
2272 static ssize_t qedi_show_boot_tgt_pri_info(void *data, int type, char *buf)
2273 {
2274         struct qedi_ctx *qedi = data;
2275
2276         return qedi_show_boot_tgt_info(qedi, type, buf, QEDI_NVM_TGT_PRI);
2277 }
2278
2279 static ssize_t qedi_show_boot_tgt_sec_info(void *data, int type, char *buf)
2280 {
2281         struct qedi_ctx *qedi = data;
2282
2283         return qedi_show_boot_tgt_info(qedi, type, buf, QEDI_NVM_TGT_SEC);
2284 }
2285
2286 static umode_t qedi_tgt_get_attr_visibility(void *data, int type)
2287 {
2288         int rc;
2289
2290         switch (type) {
2291         case ISCSI_BOOT_TGT_NAME:
2292         case ISCSI_BOOT_TGT_IP_ADDR:
2293         case ISCSI_BOOT_TGT_PORT:
2294         case ISCSI_BOOT_TGT_LUN:
2295         case ISCSI_BOOT_TGT_CHAP_NAME:
2296         case ISCSI_BOOT_TGT_CHAP_SECRET:
2297         case ISCSI_BOOT_TGT_REV_CHAP_NAME:
2298         case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
2299         case ISCSI_BOOT_TGT_NIC_ASSOC:
2300         case ISCSI_BOOT_TGT_FLAGS:
2301                 rc = 0444;
2302                 break;
2303         default:
2304                 rc = 0;
2305                 break;
2306         }
2307         return rc;
2308 }
2309
2310 static void qedi_boot_release(void *data)
2311 {
2312         struct qedi_ctx *qedi = data;
2313
2314         scsi_host_put(qedi->shost);
2315 }
2316
2317 static int qedi_get_boot_info(struct qedi_ctx *qedi)
2318 {
2319         int ret = 1;
2320
2321         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
2322                   "Get NVM iSCSI CFG image\n");
2323         ret = qedi_ops->common->nvm_get_image(qedi->cdev,
2324                                               QED_NVM_IMAGE_ISCSI_CFG,
2325                                               (char *)qedi->iscsi_image,
2326                                               sizeof(struct qedi_nvm_iscsi_image));
2327         if (ret)
2328                 QEDI_ERR(&qedi->dbg_ctx,
2329                          "Could not get NVM image. ret = %d\n", ret);
2330
2331         return ret;
2332 }
2333
2334 static int qedi_setup_boot_info(struct qedi_ctx *qedi)
2335 {
2336         struct iscsi_boot_kobj *boot_kobj;
2337
2338         if (qedi_get_boot_info(qedi))
2339                 return -EPERM;
2340
2341         qedi->boot_kset = iscsi_boot_create_host_kset(qedi->shost->host_no);
2342         if (!qedi->boot_kset)
2343                 goto kset_free;
2344
2345         if (!scsi_host_get(qedi->shost))
2346                 goto kset_free;
2347
2348         boot_kobj = iscsi_boot_create_target(qedi->boot_kset, 0, qedi,
2349                                              qedi_show_boot_tgt_pri_info,
2350                                              qedi_tgt_get_attr_visibility,
2351                                              qedi_boot_release);
2352         if (!boot_kobj)
2353                 goto put_host;
2354
2355         if (!scsi_host_get(qedi->shost))
2356                 goto kset_free;
2357
2358         boot_kobj = iscsi_boot_create_target(qedi->boot_kset, 1, qedi,
2359                                              qedi_show_boot_tgt_sec_info,
2360                                              qedi_tgt_get_attr_visibility,
2361                                              qedi_boot_release);
2362         if (!boot_kobj)
2363                 goto put_host;
2364
2365         if (!scsi_host_get(qedi->shost))
2366                 goto kset_free;
2367
2368         boot_kobj = iscsi_boot_create_initiator(qedi->boot_kset, 0, qedi,
2369                                                 qedi_show_boot_ini_info,
2370                                                 qedi_ini_get_attr_visibility,
2371                                                 qedi_boot_release);
2372         if (!boot_kobj)
2373                 goto put_host;
2374
2375         if (!scsi_host_get(qedi->shost))
2376                 goto kset_free;
2377
2378         boot_kobj = iscsi_boot_create_ethernet(qedi->boot_kset, 0, qedi,
2379                                                qedi_show_boot_eth_info,
2380                                                qedi_eth_get_attr_visibility,
2381                                                qedi_boot_release);
2382         if (!boot_kobj)
2383                 goto put_host;
2384
2385         return 0;
2386
2387 put_host:
2388         scsi_host_put(qedi->shost);
2389 kset_free:
2390         iscsi_boot_destroy_kset(qedi->boot_kset);
2391         return -ENOMEM;
2392 }
2393
2394 static pci_ers_result_t qedi_io_error_detected(struct pci_dev *pdev,
2395                                                pci_channel_state_t state)
2396 {
2397         struct qedi_ctx *qedi = pci_get_drvdata(pdev);
2398
2399         QEDI_ERR(&qedi->dbg_ctx, "%s: PCI error detected [%d]\n",
2400                  __func__, state);
2401
2402         if (test_and_set_bit(QEDI_IN_RECOVERY, &qedi->flags)) {
2403                 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
2404                           "Recovery already in progress.\n");
2405                 return PCI_ERS_RESULT_NONE;
2406         }
2407
2408         qedi_ops->common->recovery_process(qedi->cdev);
2409
2410         return PCI_ERS_RESULT_CAN_RECOVER;
2411 }
2412
2413 static void __qedi_remove(struct pci_dev *pdev, int mode)
2414 {
2415         struct qedi_ctx *qedi = pci_get_drvdata(pdev);
2416         int rval;
2417         u16 retry = 10;
2418
2419         if (mode == QEDI_MODE_NORMAL)
2420                 iscsi_host_remove(qedi->shost, false);
2421         else if (mode == QEDI_MODE_SHUTDOWN)
2422                 iscsi_host_remove(qedi->shost, true);
2423
2424         if (mode == QEDI_MODE_NORMAL || mode == QEDI_MODE_SHUTDOWN) {
2425                 if (qedi->tmf_thread) {
2426                         destroy_workqueue(qedi->tmf_thread);
2427                         qedi->tmf_thread = NULL;
2428                 }
2429
2430                 if (qedi->offload_thread) {
2431                         destroy_workqueue(qedi->offload_thread);
2432                         qedi->offload_thread = NULL;
2433                 }
2434         }
2435
2436 #ifdef CONFIG_DEBUG_FS
2437         qedi_dbg_host_exit(&qedi->dbg_ctx);
2438 #endif
2439         if (!test_bit(QEDI_IN_OFFLINE, &qedi->flags))
2440                 qedi_ops->common->set_power_state(qedi->cdev, PCI_D0);
2441
2442         qedi_sync_free_irqs(qedi);
2443
2444         if (!test_bit(QEDI_IN_OFFLINE, &qedi->flags)) {
2445                 while (retry--) {
2446                         rval = qedi_ops->stop(qedi->cdev);
2447                         if (rval < 0)
2448                                 msleep(1000);
2449                         else
2450                                 break;
2451                 }
2452                 qedi_ops->ll2->stop(qedi->cdev);
2453         }
2454
2455         cancel_delayed_work_sync(&qedi->recovery_work);
2456         cancel_delayed_work_sync(&qedi->board_disable_work);
2457
2458         qedi_free_iscsi_pf_param(qedi);
2459
2460         rval = qedi_ops->common->update_drv_state(qedi->cdev, false);
2461         if (rval)
2462                 QEDI_ERR(&qedi->dbg_ctx, "Failed to send drv state to MFW\n");
2463
2464         if (!test_bit(QEDI_IN_OFFLINE, &qedi->flags)) {
2465                 qedi_ops->common->slowpath_stop(qedi->cdev);
2466                 qedi_ops->common->remove(qedi->cdev);
2467         }
2468
2469         qedi_destroy_fp(qedi);
2470
2471         if (mode == QEDI_MODE_NORMAL || mode == QEDI_MODE_SHUTDOWN) {
2472                 qedi_release_cid_que(qedi);
2473                 qedi_cm_free_mem(qedi);
2474                 qedi_free_uio(qedi->udev);
2475                 qedi_free_itt(qedi);
2476
2477                 if (qedi->ll2_recv_thread) {
2478                         kthread_stop(qedi->ll2_recv_thread);
2479                         qedi->ll2_recv_thread = NULL;
2480                 }
2481                 qedi_ll2_free_skbs(qedi);
2482
2483                 if (qedi->boot_kset)
2484                         iscsi_boot_destroy_kset(qedi->boot_kset);
2485
2486                 iscsi_host_free(qedi->shost);
2487         }
2488 }
2489
2490 static void qedi_board_disable_work(struct work_struct *work)
2491 {
2492         struct qedi_ctx *qedi =
2493                         container_of(work, struct qedi_ctx,
2494                                      board_disable_work.work);
2495
2496         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
2497                   "Fan failure, Unloading firmware context.\n");
2498
2499         if (test_and_set_bit(QEDI_IN_SHUTDOWN, &qedi->flags))
2500                 return;
2501
2502         __qedi_remove(qedi->pdev, QEDI_MODE_NORMAL);
2503 }
2504
2505 static void qedi_shutdown(struct pci_dev *pdev)
2506 {
2507         struct qedi_ctx *qedi = pci_get_drvdata(pdev);
2508
2509         QEDI_ERR(&qedi->dbg_ctx, "%s: Shutdown qedi\n", __func__);
2510         if (test_and_set_bit(QEDI_IN_SHUTDOWN, &qedi->flags))
2511                 return;
2512         __qedi_remove(pdev, QEDI_MODE_SHUTDOWN);
2513 }
2514
2515 static int qedi_suspend(struct pci_dev *pdev, pm_message_t state)
2516 {
2517         struct qedi_ctx *qedi;
2518
2519         if (!pdev) {
2520                 QEDI_ERR(NULL, "pdev is NULL.\n");
2521                 return -ENODEV;
2522         }
2523
2524         qedi = pci_get_drvdata(pdev);
2525
2526         QEDI_ERR(&qedi->dbg_ctx, "%s: Device does not support suspend operation\n", __func__);
2527
2528         return -EPERM;
2529 }
2530
2531 static int __qedi_probe(struct pci_dev *pdev, int mode)
2532 {
2533         struct qedi_ctx *qedi;
2534         struct qed_ll2_params params;
2535         u8 dp_level = 0;
2536         bool is_vf = false;
2537         char host_buf[16];
2538         struct qed_link_params link_params;
2539         struct qed_slowpath_params sp_params;
2540         struct qed_probe_params qed_params;
2541         void *task_start, *task_end;
2542         int rc;
2543         u16 retry = 10;
2544
2545         if (mode != QEDI_MODE_RECOVERY) {
2546                 qedi = qedi_host_alloc(pdev);
2547                 if (!qedi) {
2548                         rc = -ENOMEM;
2549                         goto exit_probe;
2550                 }
2551         } else {
2552                 qedi = pci_get_drvdata(pdev);
2553         }
2554
2555 retry_probe:
2556         if (mode == QEDI_MODE_RECOVERY)
2557                 msleep(2000);
2558
2559         memset(&qed_params, 0, sizeof(qed_params));
2560         qed_params.protocol = QED_PROTOCOL_ISCSI;
2561         qed_params.dp_module = qedi_qed_debug;
2562         qed_params.dp_level = dp_level;
2563         qed_params.is_vf = is_vf;
2564         qedi->cdev = qedi_ops->common->probe(pdev, &qed_params);
2565         if (!qedi->cdev) {
2566                 if (mode == QEDI_MODE_RECOVERY && retry) {
2567                         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
2568                                   "Retry %d initialize hardware\n", retry);
2569                         retry--;
2570                         goto retry_probe;
2571                 }
2572
2573                 rc = -ENODEV;
2574                 QEDI_ERR(&qedi->dbg_ctx, "Cannot initialize hardware\n");
2575                 goto free_host;
2576         }
2577
2578         set_bit(QEDI_ERR_ATTN_CLR_EN, &qedi->qedi_err_flags);
2579         set_bit(QEDI_ERR_IS_RECOVERABLE, &qedi->qedi_err_flags);
2580         atomic_set(&qedi->link_state, QEDI_LINK_DOWN);
2581
2582         rc = qedi_ops->fill_dev_info(qedi->cdev, &qedi->dev_info);
2583         if (rc)
2584                 goto free_host;
2585
2586         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
2587                   "dev_info: num_hwfns=%d affin_hwfn_idx=%d.\n",
2588                   qedi->dev_info.common.num_hwfns,
2589                   qedi_ops->common->get_affin_hwfn_idx(qedi->cdev));
2590
2591         rc = qedi_set_iscsi_pf_param(qedi);
2592         if (rc) {
2593                 rc = -ENOMEM;
2594                 QEDI_ERR(&qedi->dbg_ctx,
2595                          "Set iSCSI pf param fail\n");
2596                 goto free_host;
2597         }
2598
2599         qedi_ops->common->update_pf_params(qedi->cdev, &qedi->pf_params);
2600
2601         rc = qedi_prepare_fp(qedi);
2602         if (rc) {
2603                 QEDI_ERR(&qedi->dbg_ctx, "Cannot start slowpath.\n");
2604                 goto free_pf_params;
2605         }
2606
2607         /* Start the Slowpath-process */
2608         memset(&sp_params, 0, sizeof(struct qed_slowpath_params));
2609         sp_params.int_mode = QED_INT_MODE_MSIX;
2610         sp_params.drv_major = QEDI_DRIVER_MAJOR_VER;
2611         sp_params.drv_minor = QEDI_DRIVER_MINOR_VER;
2612         sp_params.drv_rev = QEDI_DRIVER_REV_VER;
2613         sp_params.drv_eng = QEDI_DRIVER_ENG_VER;
2614         strscpy(sp_params.name, "qedi iSCSI", QED_DRV_VER_STR_SIZE);
2615         rc = qedi_ops->common->slowpath_start(qedi->cdev, &sp_params);
2616         if (rc) {
2617                 QEDI_ERR(&qedi->dbg_ctx, "Cannot start slowpath\n");
2618                 goto stop_hw;
2619         }
2620
2621         /* update_pf_params needs to be called before and after slowpath
2622          * start
2623          */
2624         qedi_ops->common->update_pf_params(qedi->cdev, &qedi->pf_params);
2625
2626         rc = qedi_setup_int(qedi);
2627         if (rc)
2628                 goto stop_iscsi_func;
2629
2630         qedi_ops->common->set_power_state(qedi->cdev, PCI_D0);
2631
2632         /* Learn information crucial for qedi to progress */
2633         rc = qedi_ops->fill_dev_info(qedi->cdev, &qedi->dev_info);
2634         if (rc)
2635                 goto stop_iscsi_func;
2636
2637         /* Record BDQ producer doorbell addresses */
2638         qedi->bdq_primary_prod = qedi->dev_info.primary_dbq_rq_addr;
2639         qedi->bdq_secondary_prod = qedi->dev_info.secondary_bdq_rq_addr;
2640         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
2641                   "BDQ primary_prod=%p secondary_prod=%p.\n",
2642                   qedi->bdq_primary_prod,
2643                   qedi->bdq_secondary_prod);
2644
2645         /*
2646          * We need to write the number of BDs in the BDQ we've preallocated so
2647          * the f/w will do a prefetch and we'll get an unsolicited CQE when a
2648          * packet arrives.
2649          */
2650         qedi->bdq_prod_idx = QEDI_BDQ_NUM;
2651         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
2652                   "Writing %d to primary and secondary BDQ doorbell registers.\n",
2653                   qedi->bdq_prod_idx);
2654         writew(qedi->bdq_prod_idx, qedi->bdq_primary_prod);
2655         readw(qedi->bdq_primary_prod);
2656         writew(qedi->bdq_prod_idx, qedi->bdq_secondary_prod);
2657         readw(qedi->bdq_secondary_prod);
2658
2659         ether_addr_copy(qedi->mac, qedi->dev_info.common.hw_mac);
2660         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, "MAC address is %pM.\n",
2661                   qedi->mac);
2662
2663         snprintf(host_buf, sizeof(host_buf), "host_%d", qedi->shost->host_no);
2664         qedi_ops->common->set_name(qedi->cdev, host_buf);
2665
2666         qedi_ops->register_ops(qedi->cdev, &qedi_cb_ops, qedi);
2667
2668         memset(&params, 0, sizeof(params));
2669         params.mtu = DEF_PATH_MTU + IPV6_HDR_LEN + TCP_HDR_LEN;
2670         qedi->ll2_mtu = DEF_PATH_MTU;
2671         params.drop_ttl0_packets = 0;
2672         params.rx_vlan_stripping = 1;
2673         ether_addr_copy(params.ll2_mac_address, qedi->dev_info.common.hw_mac);
2674
2675         if (mode != QEDI_MODE_RECOVERY) {
2676                 /* set up rx path */
2677                 INIT_LIST_HEAD(&qedi->ll2_skb_list);
2678                 spin_lock_init(&qedi->ll2_lock);
2679                 /* start qedi context */
2680                 spin_lock_init(&qedi->hba_lock);
2681                 spin_lock_init(&qedi->task_idx_lock);
2682                 mutex_init(&qedi->stats_lock);
2683         }
2684         qedi_ops->ll2->register_cb_ops(qedi->cdev, &qedi_ll2_cb_ops, qedi);
2685         qedi_ops->ll2->start(qedi->cdev, &params);
2686
2687         if (mode != QEDI_MODE_RECOVERY) {
2688                 qedi->ll2_recv_thread = kthread_run(qedi_ll2_recv_thread,
2689                                                     (void *)qedi,
2690                                                     "qedi_ll2_thread");
2691         }
2692
2693         rc = qedi_ops->start(qedi->cdev, &qedi->tasks,
2694                              qedi, qedi_iscsi_event_cb);
2695         if (rc) {
2696                 rc = -ENODEV;
2697                 QEDI_ERR(&qedi->dbg_ctx, "Cannot start iSCSI function\n");
2698                 goto stop_slowpath;
2699         }
2700
2701         task_start = qedi_get_task_mem(&qedi->tasks, 0);
2702         task_end = qedi_get_task_mem(&qedi->tasks, MAX_TID_BLOCKS_ISCSI - 1);
2703         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
2704                   "Task context start=%p, end=%p block_size=%u.\n",
2705                    task_start, task_end, qedi->tasks.size);
2706
2707         memset(&link_params, 0, sizeof(link_params));
2708         link_params.link_up = true;
2709         rc = qedi_ops->common->set_link(qedi->cdev, &link_params);
2710         if (rc) {
2711                 QEDI_WARN(&qedi->dbg_ctx, "Link set up failed.\n");
2712                 atomic_set(&qedi->link_state, QEDI_LINK_DOWN);
2713         }
2714
2715 #ifdef CONFIG_DEBUG_FS
2716         qedi_dbg_host_init(&qedi->dbg_ctx, qedi_debugfs_ops,
2717                            qedi_dbg_fops);
2718 #endif
2719         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
2720                   "QLogic FastLinQ iSCSI Module qedi %s, FW %d.%d.%d.%d\n",
2721                   QEDI_MODULE_VERSION, FW_MAJOR_VERSION, FW_MINOR_VERSION,
2722                   FW_REVISION_VERSION, FW_ENGINEERING_VERSION);
2723
2724         if (mode == QEDI_MODE_NORMAL) {
2725                 if (iscsi_host_add(qedi->shost, &pdev->dev)) {
2726                         QEDI_ERR(&qedi->dbg_ctx,
2727                                  "Could not add iscsi host\n");
2728                         rc = -ENOMEM;
2729                         goto remove_host;
2730                 }
2731
2732                 /* Allocate uio buffers */
2733                 rc = qedi_alloc_uio_rings(qedi);
2734                 if (rc) {
2735                         QEDI_ERR(&qedi->dbg_ctx,
2736                                  "UIO alloc ring failed err=%d\n", rc);
2737                         goto remove_host;
2738                 }
2739
2740                 rc = qedi_init_uio(qedi);
2741                 if (rc) {
2742                         QEDI_ERR(&qedi->dbg_ctx,
2743                                  "UIO init failed, err=%d\n", rc);
2744                         goto free_uio;
2745                 }
2746
2747                 /* host the array on iscsi_conn */
2748                 rc = qedi_setup_cid_que(qedi);
2749                 if (rc) {
2750                         QEDI_ERR(&qedi->dbg_ctx,
2751                                  "Could not setup cid que\n");
2752                         goto free_uio;
2753                 }
2754
2755                 rc = qedi_cm_alloc_mem(qedi);
2756                 if (rc) {
2757                         QEDI_ERR(&qedi->dbg_ctx,
2758                                  "Could not alloc cm memory\n");
2759                         goto free_cid_que;
2760                 }
2761
2762                 rc = qedi_alloc_itt(qedi);
2763                 if (rc) {
2764                         QEDI_ERR(&qedi->dbg_ctx,
2765                                  "Could not alloc itt memory\n");
2766                         goto free_cid_que;
2767                 }
2768
2769                 sprintf(host_buf, "host_%d", qedi->shost->host_no);
2770                 qedi->tmf_thread = create_singlethread_workqueue(host_buf);
2771                 if (!qedi->tmf_thread) {
2772                         QEDI_ERR(&qedi->dbg_ctx,
2773                                  "Unable to start tmf thread!\n");
2774                         rc = -ENODEV;
2775                         goto free_cid_que;
2776                 }
2777
2778                 sprintf(host_buf, "qedi_ofld%d", qedi->shost->host_no);
2779                 qedi->offload_thread = create_workqueue(host_buf);
2780                 if (!qedi->offload_thread) {
2781                         QEDI_ERR(&qedi->dbg_ctx,
2782                                  "Unable to start offload thread!\n");
2783                         rc = -ENODEV;
2784                         goto free_tmf_thread;
2785                 }
2786
2787                 INIT_DELAYED_WORK(&qedi->recovery_work, qedi_recovery_handler);
2788                 INIT_DELAYED_WORK(&qedi->board_disable_work,
2789                                   qedi_board_disable_work);
2790
2791                 /* F/w needs 1st task context memory entry for performance */
2792                 set_bit(QEDI_RESERVE_TASK_ID, qedi->task_idx_map);
2793                 atomic_set(&qedi->num_offloads, 0);
2794
2795                 if (qedi_setup_boot_info(qedi))
2796                         QEDI_ERR(&qedi->dbg_ctx,
2797                                  "No iSCSI boot target configured\n");
2798
2799                 rc = qedi_ops->common->update_drv_state(qedi->cdev, true);
2800                 if (rc)
2801                         QEDI_ERR(&qedi->dbg_ctx,
2802                                  "Failed to send drv state to MFW\n");
2803
2804         }
2805
2806         return 0;
2807
2808 free_tmf_thread:
2809         destroy_workqueue(qedi->tmf_thread);
2810 free_cid_que:
2811         qedi_release_cid_que(qedi);
2812 free_uio:
2813         qedi_free_uio(qedi->udev);
2814 remove_host:
2815 #ifdef CONFIG_DEBUG_FS
2816         qedi_dbg_host_exit(&qedi->dbg_ctx);
2817 #endif
2818         iscsi_host_remove(qedi->shost, false);
2819 stop_iscsi_func:
2820         qedi_ops->stop(qedi->cdev);
2821 stop_slowpath:
2822         qedi_ops->common->slowpath_stop(qedi->cdev);
2823 stop_hw:
2824         qedi_ops->common->remove(qedi->cdev);
2825 free_pf_params:
2826         qedi_free_iscsi_pf_param(qedi);
2827 free_host:
2828         iscsi_host_free(qedi->shost);
2829 exit_probe:
2830         return rc;
2831 }
2832
2833 static void qedi_mark_conn_recovery(struct iscsi_cls_session *cls_session)
2834 {
2835         struct iscsi_session *session = cls_session->dd_data;
2836         struct iscsi_conn *conn = session->leadconn;
2837         struct qedi_conn *qedi_conn = conn->dd_data;
2838
2839         iscsi_conn_failure(qedi_conn->cls_conn->dd_data, ISCSI_ERR_CONN_FAILED);
2840 }
2841
2842 static void qedi_recovery_handler(struct work_struct *work)
2843 {
2844         struct qedi_ctx *qedi =
2845                         container_of(work, struct qedi_ctx, recovery_work.work);
2846
2847         iscsi_host_for_each_session(qedi->shost, qedi_mark_conn_recovery);
2848
2849         /* Call common_ops->recovery_prolog to allow the MFW to quiesce
2850          * any PCI transactions.
2851          */
2852         qedi_ops->common->recovery_prolog(qedi->cdev);
2853
2854         __qedi_remove(qedi->pdev, QEDI_MODE_RECOVERY);
2855         __qedi_probe(qedi->pdev, QEDI_MODE_RECOVERY);
2856         clear_bit(QEDI_IN_RECOVERY, &qedi->flags);
2857 }
2858
2859 static int qedi_probe(struct pci_dev *pdev, const struct pci_device_id *id)
2860 {
2861         return __qedi_probe(pdev, QEDI_MODE_NORMAL);
2862 }
2863
2864 static void qedi_remove(struct pci_dev *pdev)
2865 {
2866         __qedi_remove(pdev, QEDI_MODE_NORMAL);
2867 }
2868
2869 static struct pci_device_id qedi_pci_tbl[] = {
2870         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x165E) },
2871         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x8084) },
2872         { 0 },
2873 };
2874 MODULE_DEVICE_TABLE(pci, qedi_pci_tbl);
2875
2876 static enum cpuhp_state qedi_cpuhp_state;
2877
2878 static struct pci_error_handlers qedi_err_handler = {
2879         .error_detected = qedi_io_error_detected,
2880 };
2881
2882 static struct pci_driver qedi_pci_driver = {
2883         .name = QEDI_MODULE_NAME,
2884         .id_table = qedi_pci_tbl,
2885         .probe = qedi_probe,
2886         .remove = qedi_remove,
2887         .shutdown = qedi_shutdown,
2888         .err_handler = &qedi_err_handler,
2889         .suspend = qedi_suspend,
2890 };
2891
2892 static int __init qedi_init(void)
2893 {
2894         struct qedi_percpu_s *p;
2895         int cpu, rc = 0;
2896
2897         qedi_ops = qed_get_iscsi_ops();
2898         if (!qedi_ops) {
2899                 QEDI_ERR(NULL, "Failed to get qed iSCSI operations\n");
2900                 return -EINVAL;
2901         }
2902
2903 #ifdef CONFIG_DEBUG_FS
2904         qedi_dbg_init("qedi");
2905 #endif
2906
2907         qedi_scsi_transport = iscsi_register_transport(&qedi_iscsi_transport);
2908         if (!qedi_scsi_transport) {
2909                 QEDI_ERR(NULL, "Could not register qedi transport");
2910                 rc = -ENOMEM;
2911                 goto exit_qedi_init_1;
2912         }
2913
2914         for_each_possible_cpu(cpu) {
2915                 p = &per_cpu(qedi_percpu, cpu);
2916                 INIT_LIST_HEAD(&p->work_list);
2917                 spin_lock_init(&p->p_work_lock);
2918                 p->iothread = NULL;
2919         }
2920
2921         rc = cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "scsi/qedi:online",
2922                                qedi_cpu_online, qedi_cpu_offline);
2923         if (rc < 0)
2924                 goto exit_qedi_init_2;
2925         qedi_cpuhp_state = rc;
2926
2927         rc = pci_register_driver(&qedi_pci_driver);
2928         if (rc) {
2929                 QEDI_ERR(NULL, "Failed to register driver\n");
2930                 goto exit_qedi_hp;
2931         }
2932
2933         return 0;
2934
2935 exit_qedi_hp:
2936         cpuhp_remove_state(qedi_cpuhp_state);
2937 exit_qedi_init_2:
2938         iscsi_unregister_transport(&qedi_iscsi_transport);
2939 exit_qedi_init_1:
2940 #ifdef CONFIG_DEBUG_FS
2941         qedi_dbg_exit();
2942 #endif
2943         qed_put_iscsi_ops();
2944         return rc;
2945 }
2946
2947 static void __exit qedi_cleanup(void)
2948 {
2949         pci_unregister_driver(&qedi_pci_driver);
2950         cpuhp_remove_state(qedi_cpuhp_state);
2951         iscsi_unregister_transport(&qedi_iscsi_transport);
2952
2953 #ifdef CONFIG_DEBUG_FS
2954         qedi_dbg_exit();
2955 #endif
2956         qed_put_iscsi_ops();
2957 }
2958
2959 MODULE_DESCRIPTION("QLogic FastLinQ 4xxxx iSCSI Module");
2960 MODULE_LICENSE("GPL");
2961 MODULE_AUTHOR("QLogic Corporation");
2962 MODULE_VERSION(QEDI_MODULE_VERSION);
2963 module_init(qedi_init);
2964 module_exit(qedi_cleanup);